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Debt - Schedule of Debt (Detail) - USD ($)
$ in Millions
Dec. 31, 2016
Dec. 31, 2015
Debt Instrument [Line Items]    
Debt before unamortized discount $ 8,650  
Debt issuance costs 56 $ 61
Total debt 8,544 8,717
Current maturities 0 (1)
Long-term debt 8,544 8,716 [1]
Commercial Paper [Member]    
Debt Instrument [Line Items]    
Total debt 0 0
Unsecured Debt [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount 8,650 8,831
Unamortized discount (50) (53)
Debt issuance costs 56 61
Total debt 8,544 8,717
Current maturities 0 (1)
Long-term debt 8,544 8,716
Unsecured Debt [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount 8,350 8,530
Unsecured Debt [Member] | United States [Member] | Commercial Paper [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 0 $ 0
Unsecured Debt [Member] | 6.9% notes due 2018 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 6.90% 6.90%
Unsecured Debt [Member] | 6.9% notes due 2018 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 400 $ 400
Unsecured Debt [Member] | 7.0% notes due 2018 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 7.00% 7.00%
Unsecured Debt [Member] | 7.0% notes due 2018 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 150 $ 150
Unsecured Debt [Member] | 7.625% notes due 2019 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 7.625% 7.625%
Unsecured Debt [Member] | 7.625% notes due 2019 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 150 $ 150
Unsecured Debt [Member] | 3.625% notes due 2021 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 3.625% 3.625%
Unsecured Debt [Member] | 3.625% notes due 2021 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 493 $ 500
Unsecured Debt [Member] | 3.25% notes due 2022 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 3.25% 3.25%
Unsecured Debt [Member] | 3.25% notes due 2022 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 857 $ 919
Unsecured Debt [Member] | 2.625% notes due 2023 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 2.625% 2.625%
Unsecured Debt [Member] | 2.625% notes due 2023 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 528 $ 531
Unsecured Debt [Member] | 7.7% notes due 2026 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 7.70% 7.70%
Unsecured Debt [Member] | 7.7% notes due 2026 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 100 $ 100
Unsecured Debt [Member] | 7.95% notes due 2026 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 7.95% 7.95%
Unsecured Debt [Member] | 7.95% notes due 2026 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 180 $ 180
Unsecured Debt [Member] | 6.0% notes due 2037 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 6.00% 6.00%
Unsecured Debt [Member] | 6.0% notes due 2037 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 1,000 $ 1,000
Unsecured Debt [Member] | 5.1% notes due 2040 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 5.10% 5.10%
Unsecured Debt [Member] | 5.1% notes due 2040 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 1,499 $ 1,500
Unsecured Debt [Member] | 5.25% notes due 2042 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 5.25% 5.25%
Unsecured Debt [Member] | 5.25% notes due 2042 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 500 $ 500
Unsecured Debt [Member] | 4.75% notes due 2043 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 4.75% 4.75%
Unsecured Debt [Member] | 4.75% notes due 2043 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 1,413 $ 1,500
Unsecured Debt [Member] | 4.25% notes due 2044 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 4.25% 4.25%
Unsecured Debt [Member] | 4.25% notes due 2044 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 780 $ 800
Unsecured Debt [Member] | 7.375% debentures due 2047 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 7.375% 7.375%
Unsecured Debt [Member] | 7.375% debentures due 2047 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 150 $ 150
Unsecured Debt [Member] | 7.625% debentures due 2096 [Member]    
Debt Instrument [Line Items]    
Debt interest rate 7.625% 7.625%
Unsecured Debt [Member] | 7.625% debentures due 2096 [Member] | United States [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 150 $ 150
Unsecured Debt [Member] | Notes due In 2017 [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount 0 1
Unsecured Debt [Member] | Apache finance Canada 7.75% notes due 2029 [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 300 $ 300
Debt interest rate 7.75% 7.75%
Unsecured Debt [Member] | Subsidiary and other obligations [Member]    
Debt Instrument [Line Items]    
Debt before unamortized discount $ 300 $ 301
[1] Financial information for 2015 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.