Long-Term Debt - Long-Term Debt Obligations (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt	$ 24,965	$ 24,942
Less current portion of long-term debt	(1,371)	(100)
Face value of long-term debt	23,594	24,842
Senior Notes
Debt Instrument [Line Items]
Total debt	$ 24,300
Senior Notes \| 2.600% Notes due on December 5, 2019
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.60%
Total debt	$ 1,000	1,000
Effective interest rate	2.73%
Senior Notes \| 1.900% Notes due on August 21, 2020
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	1.90%
Total debt	$ 1,000	1,000
Effective interest rate	2.16%
Senior Notes \| 3.300% Notes due on December 5, 2021
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.30%
Total debt	$ 1,000	1,000
Effective interest rate	3.43%
Senior Notes \| 2.500% Notes due on November 29, 2022
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.50%
Total debt	$ 1,250	1,250
Effective interest rate	2.66%
Senior Notes \| 2.400% Notes due on February 22, 2023
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.40%
Total debt	$ 1,000	1,000
Effective interest rate	2.56%
Senior Notes \| 2.800% Notes due on August 22, 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.80%
Total debt	$ 2,000	2,000
Effective interest rate	2.95%
Senior Notes \| 3.800% Notes due on December 5, 2024
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.80%
Total debt	$ 1,250	1,250
Effective interest rate	3.90%
Senior Notes \| 5.200% Notes due on December 3, 2025
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.20%
Total debt	$ 1,000	1,000
Effective interest rate	3.02%
Senior Notes \| 3.150% Notes due on August 22, 2027
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.15%
Total debt	$ 3,500	3,500
Effective interest rate	3.25%
Senior Notes \| 4.800% Notes due on December 5, 2034
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.80%
Total debt	$ 1,250	1,250
Effective interest rate	4.92%
Senior Notes \| 3.875% Notes due on August 22, 2037
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.875%
Total debt	$ 2,750	2,750
Effective interest rate	3.94%
Senior Notes \| 4.950% Notes due on December 5, 2044
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.95%
Total debt	$ 1,500	1,500
Effective interest rate	5.11%
Senior Notes \| 4.050% Notes due on August 22, 2047
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.05%
Total debt	$ 3,500	3,500
Effective interest rate	4.13%
Senior Notes \| 4.250% Notes due on August 22, 2057
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.25%
Total debt	$ 2,250	2,250
Effective interest rate	4.33%
Credit Facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Total debt	$ 594	592
Other long-term debt
Debt Instrument [Line Items]
Total debt	$ 121	100
Amazon.com, Inc. [Member] \| 5.200% Notes due on December 3, 2025
Debt Instrument [Line Items]
Total debt		872
Whole Foods Market, Inc. [Member] \| 5.200% Notes due on December 3, 2025
Debt Instrument [Line Items]
Total debt		$ 128

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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