Financing arrangements (Principal Amounts and Carrying Value of Long-term Borrowings) (Details) $ in Millions | Jun. 30, 2022 USD ($) | Jun. 30, 2022 CHF (SFr) | Jun. 30, 2022 EUR (€) | Jun. 30, 2022 GBP (£) | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) |
Debt Instrument [Line Items] | | | | | | |
Unamortized bond discounts, premiums and issuance costs, net | $ (1,245) | | | | | $ (1,213) |
Fair value adjustments | (210) | | | | | 284 |
Other | 13 | | | | | 15 |
Total carrying value of debt | 36,522 | | | | | 33,309 |
Less current portion | (817) | | | | | (87) |
Total long-term debt | $ 35,705 | | | | | 33,222 |
4.20% 2052 Notes [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Face amount | | | | | $ 1,000 | |
Notes [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Face amount | | | | | $ 4,000 | |
Notes [Member] | 0.41% CHF700 million bonds due 2023 (0.41% 2023 Swiss franc Bonds) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 0.41% | 0.41% | 0.41% | 0.41% | | |
Long-term debt, gross | $ 733 | | | | | 767 |
Face amount | SFr | | SFr 700,000,000 | | | | |
Notes [Member] | 2.25% notes due 2023 (2.25% 2023 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2.25% | 2.25% | 2.25% | 2.25% | | |
Long-term debt, gross | $ 750 | | | | | 750 |
Notes [Member] | 3.625% notes due 2024 (3.625% 2024 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 3.625% | 3.625% | 3.625% | 3.625% | | |
Long-term debt, gross | $ 1,400 | | | | | 1,400 |
Notes [Member] | 1.90% notes due 2025 (1.90% 2025 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 1.90% | 1.90% | 1.90% | 1.90% | | |
Long-term debt, gross | $ 500 | | | | | 500 |
Notes [Member] | 3.125% notes due 2025 (3.125% 2025 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 3.125% | 3.125% | 3.125% | 3.125% | | |
Long-term debt, gross | $ 1,000 | | | | | 1,000 |
Notes [Member] | 2.00% €750 million notes due 2026 (2.00% 2026 euro Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2% | 2% | 2% | 2% | | |
Long-term debt, gross | $ 786 | | | | | 853 |
Face amount | € | | | € 750,000,000 | | | |
Notes [Member] | 2.60% notes due 2026 (2.60% 2026 notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2.60% | 2.60% | 2.60% | 2.60% | | |
Long-term debt, gross | $ 1,250 | | | | | 1,250 |
Notes [Member] | 5.50% £475 million notes due 2026 (5.50% 2026 pound sterling Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 5.50% | 5.50% | 5.50% | 5.50% | | |
Long-term debt, gross | $ 579 | | | | | 643 |
Face amount | £ | | | | £ 475,000,000 | | |
Notes [Member] | 2.20% notes due 2027 (2.20% 2027 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2.20% | 2.20% | 2.20% | 2.20% | | |
Long-term debt, gross | $ 1,750 | | | | | 1,750 |
Notes [Member] | 3.20% notes due 2027 (3.20% 2027 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 3.20% | 3.20% | 3.20% | 3.20% | | |
Long-term debt, gross | $ 1,000 | | | | | 1,000 |
Notes [Member] | 1.65% notes due 2028 (1.65% 2028 Notes) [Member} | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 1.65% | 1.65% | 1.65% | 1.65% | | |
Long-term debt, gross | $ 1,250 | | | | | 1,250 |
Notes [Member] | 3.00% 2029 Notes [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 3% | 3% | 3% | 3% | 3% | |
Long-term debt, gross | $ 750 | | | | | 0 |
Face amount | | | | | $ 750 | |
Notes [Member] | 4.00% £700 million notes due 2029 (4.00% 2029 pound sterling Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 4% | 4% | 4% | 4% | | |
Long-term debt, gross | $ 853 | | | | | 947 |
Face amount | £ | | | | £ 700,000,000 | | |
Notes [Member] | 2.45% notes due 2030 (2.45% 2030 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2.45% | 2.45% | 2.45% | 2.45% | | |
Long-term debt, gross | $ 1,250 | | | | | 1,250 |
Notes [Member] | 2.30% notes due 2031 (2.30% 2031 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2.30% | 2.30% | 2.30% | 2.30% | | |
Long-term debt, gross | $ 1,250 | | | | | 1,250 |
Notes [Member] | 2.00% notes due 2032 (2.00% 2032 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2% | 2% | 2% | 2% | | |
Long-term debt, gross | $ 1,250 | | | | | 1,250 |
Notes [Member] | 3.35% 2032 Notes [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 3.35% | 3.35% | 3.35% | 3.35% | 3.35% | |
Long-term debt, gross | $ 1,000 | | | | | |
Face amount | | | | | $ 1,000 | |
Notes [Member] | 6.375% notes due 2037 (6.375% 2037 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 6.375% | 6.375% | 6.375% | 6.375% | | |
Long-term debt, gross | $ 478 | | | | | 478 |
Notes [Member] | 6.90% notes due 2038 (6.90% 2038 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 6.90% | 6.90% | 6.90% | 6.90% | | |
Long-term debt, gross | $ 254 | | | | | 254 |
Notes [Member] | 6.40% notes due 2039 (6.40% 2039 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 6.40% | 6.40% | 6.40% | 6.40% | | |
Long-term debt, gross | $ 333 | | | | | 333 |
Notes [Member] | 3.15% notes due 2040 (3.15% 2040 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 3.15% | 3.15% | 3.15% | 3.15% | | |
Long-term debt, gross | $ 2,000 | | | | | 2,000 |
Notes [Member] | 5.75% notes due 2040 (5.75% 2040 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 5.75% | 5.75% | 5.75% | 5.75% | | |
Long-term debt, gross | $ 373 | | | | | 373 |
Notes [Member] | 2.80% notes due 2041 (2.80% 2041 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2.80% | 2.80% | 2.80% | 2.80% | | |
Long-term debt, gross | $ 1,150 | | | | | 1,150 |
Notes [Member] | 4.95% notes due 2041 (4.95% 2041 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 4.95% | 4.95% | 4.95% | 4.95% | | |
Long-term debt, gross | $ 600 | | | | | 600 |
Notes [Member] | 5.15% notes due 2041 (5.15% 2041 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 5.15% | 5.15% | 5.15% | 5.15% | | |
Long-term debt, gross | $ 729 | | | | | 729 |
Notes [Member] | 5.65% notes due 2042 (5.65% 2042 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 5.65% | 5.65% | 5.65% | 5.65% | | |
Long-term debt, gross | $ 415 | | | | | 415 |
Notes [Member] | 5.375% notes due 2043 (5.375% 2043 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 5.375% | 5.375% | 5.375% | 5.375% | | |
Long-term debt, gross | $ 185 | | | | | 185 |
Notes [Member] | 4.40% notes due 2045 (4.40% 2045 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 4.40% | 4.40% | 4.40% | 4.40% | | |
Long-term debt, gross | $ 2,250 | | | | | 2,250 |
Notes [Member] | 4.563% notes due 2048 (4.563% 2048 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 4.563% | 4.563% | 4.563% | 4.563% | | |
Long-term debt, gross | $ 1,415 | | | | | 1,415 |
Notes [Member] | 3.375% notes due 2050 (3.375% 2050 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 3.375% | 3.375% | 3.375% | 3.375% | | |
Long-term debt, gross | $ 2,250 | | | | | 2,250 |
Notes [Member] | 4.663% notes due 2051 (4.663% 2051 Notes) [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 4.663% | 4.663% | 4.663% | 4.663% | | |
Long-term debt, gross | $ 3,541 | | | | | 3,541 |
Notes [Member] | 3.00% notes due 2052 (3.00% 2052 Notes) | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 3% | 3% | 3% | 3% | | |
Long-term debt, gross | $ 1,350 | | | | | 1,350 |
Notes [Member] | 4.20% 2052 Notes [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 4.20% | 4.20% | 4.20% | 4.20% | 4.20% | |
Long-term debt, gross | $ 1,000 | | | | | 0 |
Notes [Member] | Two Point Seven Seven Percent Notes Due Two Zero Five Three | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 2.77% | 2.77% | 2.77% | 2.77% | | |
Long-term debt, gross | $ 940 | | | | | 940 |
Notes [Member] | 4.40% 2062 Notes [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Interest rate, stated percentage | 4.40% | 4.40% | 4.40% | 4.40% | 4.40% | |
Long-term debt, gross | $ 1,250 | | | | | 0 |
Face amount | | | | | $ 1,250 | |
Notes [Member] | Other notes due 2097 [Member] | | | | | | |
Debt Instrument [Line Items] | | | | | | |
Long-term debt, gross | $ 100 | | | | | $ 100 |