| Document and Entity Information | Feb. 17, 2020 |
| Document And Entity Information [Line Items] | |
| Amendment Flag | false |
| Entity Central Index Key | 0000320193 |
| Document Type | 8-K |
| Document Period End Date | Feb. 17, 2020 |
| Entity Registrant Name | Apple Inc. |
| Entity Incorporation State Country Code | CA |
| Entity File Number | 001-36743 |
| Entity Tax Identification Number | 94-2404110 |
| Entity Address, Address Line One | One Apple Park Way |
| Entity Address, City or Town | Cupertino |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 95014 |
| City Area Code | (408) |
| Local Phone Number | 996-1010 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
| Common Stock [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | Common Stock, $0.00001 par value per share |
| Trading Symbol | AAPL |
| Security Exchange Name | NASDAQ |
| A 1.000 Notes Due 2022 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 1.000% Notes due 2022 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 1.375 Notes Due 2024 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 1.375% Notes due 2024 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 0.000 Notesdue 2025 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 0.000% Notes due 2025 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 0.875 Notes Due 2025 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 0.875% Notes due 2025 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 1.625 Notes Due 2026 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 1.625% Notes due 2026 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 2.000 Notes Due 2027 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 2.000% Notes due 2027 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 1.375 Notes Due 2029 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 1.375% Notes due 2029 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 3.050 Notes Due 2029 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 3.050% Notes due 2029 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 0.500 Notesdue 2031 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 0.500% Notes due 2031 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
| A 3.600 Notes Due 2042 [Member] | |
| Document And Entity Information [Line Items] | |
| Security 12b Title | 3.600% Notes due 2042 |
| Trading Symbol | — |
| Security Exchange Name | NASDAQ |
