Debt and Borrowing Arrangements - Long-Term Debt (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Finance leases and other	$ 244	$ 256
Total	19,296	20,017
Less current portion of long-term debt	(1,746)	(2,741)
Long-term debt	$ 17,550	17,276
U.S. dollar notes
Debt Instrument [Line Items]
Maturity date	2050
Notes payable	$ 9,280	11,917
U.S. dollar notes \| Minimum
Debt Instrument [Line Items]
Effective interest rate	0.625%
U.S. dollar notes \| Maximum
Debt Instrument [Line Items]
Effective interest rate	7.00%
U.S. dollar notes \| Weighted Average
Debt Instrument [Line Items]
Effective interest rate	2.692%
Euro notes
Debt Instrument [Line Items]
Maturity date	2041
Notes payable	$ 8,134	5,842
Euro notes \| Minimum
Debt Instrument [Line Items]
Effective interest rate	0.00%
Euro notes \| Maximum
Debt Instrument [Line Items]
Effective interest rate	2.375%
Euro notes \| Weighted Average
Debt Instrument [Line Items]
Effective interest rate	0.712%
Pound sterling notes
Debt Instrument [Line Items]
Maturity date	2045
Notes payable	$ 354	357
Pound sterling notes \| Minimum
Debt Instrument [Line Items]
Effective interest rate	3.875%
Pound sterling notes \| Maximum
Debt Instrument [Line Items]
Effective interest rate	4.50%
Pound sterling notes \| Weighted Average
Debt Instrument [Line Items]
Effective interest rate	4.151%
Swiss franc notes
Debt Instrument [Line Items]
Maturity date	2025
Notes payable	$ 811	1,175
Swiss franc notes \| Minimum
Debt Instrument [Line Items]
Effective interest rate	0.615%
Swiss franc notes \| Maximum
Debt Instrument [Line Items]
Effective interest rate	1.125%
Swiss franc notes \| Weighted Average
Debt Instrument [Line Items]
Effective interest rate	0.948%
Canadian dollar notes
Debt Instrument [Line Items]
Maturity date	2025
Notes payable	$ 473	$ 470
Canadian dollar notes \| Minimum
Debt Instrument [Line Items]
Effective interest rate	3.25%
Canadian dollar notes \| Maximum
Debt Instrument [Line Items]
Effective interest rate	3.377%

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- Definition

Finance Lease Liability And Other

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- Definition

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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