Debt Outstanding Debt (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Total borrowings at par value	$ 34,971	$ 21,919
Fair value hedge accounting adjustments		25
Unamortized discount	(117)	(102)
Unamortized debt issuance costs	(184)	(114)
Total borrowings at carrying value	34,670	21,728
Finance lease liabilities	200	7
Less: Short-term obligations and current maturities	2,537	2,628
Long-term obligations	32,333	19,107
Maturities of Long-term Debt [Abstract]
2022	2,522
2023	5,396
2024	4,138
2025	2,610
2026	797
2027 and thereafter	19,508
Total Repayments of Principal	34,971	21,919
2022	15
2023	12
2024	12
2025	12
2026	12
2027 and thereafter	137
Total Repayments of Finance Lease Liabilities	$ 200	$ 7
Finance Lease, Liability, Statement of Financial Position [Extensible Enumeration]	Long-term obligations	Long-term obligations
Commercial Paper Programs [Member]
Debt Instrument [Line Items]
Effective Interest Rate	0.01%
Total borrowings at par value	$ 2,522
Total borrowings at carrying value	2,522
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	2,522
Senior Notes [Member]
Debt Instrument [Line Items]
Total borrowings at carrying value	$ 32,072	$ 21,723
Debt Instrument, Call Feature	Each of the fixed rate senior notes may be redeemed at a redemption price of 100% of the principal amount plus a specified make-whole premium and accrued interest. Except for the euro-denominated floating rate senior notes, which may not be redeemed early, the floating rate senior notes may be redeemed in whole or in part on or after their applicable call dates at a redemption price of 100% of the principal amount plus accrued interest.
Senior Notes [Member] \| 2.15% 7-Year Senior Notes, Due 7/21/2022 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.15%
Debt Instrument, Term	7 years
Debt Instrument, Maturity Date	Jul. 21, 2022
Total borrowings at par value		611
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal		611
Senior Notes [Member] \| 3.00% 7-Year Senior Notes, Due 4/15/2023 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.00%
Debt Instrument, Term	7 years
Debt Instrument, Maturity Date	Apr. 15, 2023
Total borrowings at par value		1,000
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal		1,000
Senior Notes [Member] \| Floating Rate (SOFR +0.35%) 1.5 Year Senior Notes, Due 4/18/2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.35%
Debt Instrument, Term	1 year 6 months
Debt Instrument, Maturity Date	Apr. 18, 2023
Total borrowings at par value	$ 1,000
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,000
Senior Notes [Member] \| Floating Rate (SOFR +0.39%) 2-Year Senior Notes, Due 10/18/2023 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.39%
Debt Instrument, Term	2 years
Debt Instrument, Maturity Date	Oct. 18, 2023
Total borrowings at par value	$ 500
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 500
Senior Notes [Member] \| 0.797% 2-Year Senior Notes, Due 10/18/2023 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.797%
Debt Instrument, Term	2 years
Debt Instrument, Maturity Date	Oct. 18, 2023
Effective Interest Rate	1.03%
Total borrowings at par value	$ 1,350
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,350
Senior Notes [Member] \| Floating Rate (EURIBOR +0.20%) 2 Year Senior Notes, Due 11/18/2023 (euro-denominated) [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.20%
Debt Instrument, Term	2 years
Debt Instrument, Maturity Date	Nov. 18, 2023
Effective Interest Rate	0.00%
Total borrowings at par value	$ 1,933
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,933
Senior Notes [Member] \| 0.000% 2-Year Senior Notes, Due 11/18/2023 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.00%
Debt Instrument, Term	2 years
Debt Instrument, Maturity Date	Nov. 18, 2023
Effective Interest Rate	0.06%
Total borrowings at par value	$ 625
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 625
Senior Notes [Member] \| 4.15% 10-Year Senior Notes, Due 2/1/2024 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	4.15%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Feb. 01, 2024
Total borrowings at par value		1,000
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal		1,000
Senior Notes [Member] \| 0.75% 8-Year Senior Notes, Due 9/12/2024 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.75%
Debt Instrument, Term	8 years
Debt Instrument, Maturity Date	Sep. 12, 2024
Effective Interest Rate	0.94%
Total borrowings at par value	$ 1,137	1,222
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,137	1,222
Senior Notes [Member] \| 1.215% 3-Year Senior Notes, Due 10/18/2024 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.215%
Debt Instrument, Term	3 years
Debt Instrument, Maturity Date	Oct. 18, 2024
Effective Interest Rate	1.42%
Total borrowings at par value	$ 2,500
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 2,500
Senior Notes [Member] \| Floating Rate (SOFR +0.53%) 3-Year Senior Notes, Due 10/18/2024 [Member]
Debt Instrument [Line Items]
Debt Instrument, Basis Spread on Variable Rate	0.53%
Debt Instrument, Term	3 years
Debt Instrument, Maturity Date	Oct. 18, 2024
Total borrowings at par value	$ 500
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 500
Senior Notes [Member] \| 0.125% 5.5-Year Senior Notes, Due 3/1/2025 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.125%
Debt Instrument, Term	5 years 6 months
Debt Instrument, Maturity Date	Mar. 01, 2025
Effective Interest Rate	0.41%
Total borrowings at par value	$ 910	977
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 910	977
Senior Notes [Member] \| 4.133% 5-Year Senior Notes, Due 3/25/2025 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	4.133%
Debt Instrument, Term	5 years
Debt Instrument, Maturity Date	Mar. 25, 2025
Total borrowings at par value		1,100
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal		1,100
Senior Notes [Member] \| 2.00% 10-Year Senior Notes, Due 4/15/2025 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.00%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Apr. 15, 2025
Effective Interest Rate	2.10%
Total borrowings at par value	$ 728	782
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 728	782
Senior Notes [Member] \| 0.000% 4-Year Senior Notes, Due 11/18/2025 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.00%
Debt Instrument, Term	4 years
Debt Instrument, Maturity Date	Nov. 18, 2025
Effective Interest Rate	0.16%
Total borrowings at par value	$ 625
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 625
Senior Notes [Member] \| 3.65% 10-Year Senior Notes, Due 12/15/2025 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.65%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Dec. 15, 2025
Effective Interest Rate	3.77%
Total borrowings at par value	$ 350	350
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 350	350
Senior Notes [Member] \| 1.40% 8.5-Year Senior Notes, Due 1/23/2026 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.40%
Debt Instrument, Term	8 years 6 months
Debt Instrument, Maturity Date	Jan. 23, 2026
Effective Interest Rate	1.53%
Total borrowings at par value	$ 796	855
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 796	855
Senior Notes [Member] \| 2.95% 10-Year Senior Notes, Due 9/19/2026 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.95%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Sep. 19, 2026
Total borrowings at par value		1,200
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal		1,200
Senior Notes [Member] \| 1.45% 10-Year Senior Notes, Due 3/16/2027 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.45%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Mar. 16, 2027
Effective Interest Rate	1.66%
Total borrowings at par value	$ 568	611
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 568	611
Senior Notes [Member] \| 1.75% 7-Year Senior Notes, Due 4/15/2027 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.75%
Debt Instrument, Term	7 years
Debt Instrument, Maturity Date	Apr. 15, 2027
Effective Interest Rate	1.97%
Total borrowings at par value	$ 682	733
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 682	733
Senior Notes [Member] \| 3.20% 10-Year Senior Notes, Due 8/15/2027 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	3.20%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Aug. 15, 2027
Total borrowings at par value		750
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal		750
Senior Notes [Member] \| 0.50% 8.5-Year Senior Notes, Due 3/1/2028 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.50%
Debt Instrument, Term	8 years 6 months
Debt Instrument, Maturity Date	Mar. 01, 2028
Effective Interest Rate	0.77%
Total borrowings at par value	$ 910	977
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 910	977
Senior Notes [Member] \| 1.375% 12-Year Senior Notes, Due 9/12/2028 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.375%
Debt Instrument, Term	12 years
Debt Instrument, Maturity Date	Sep. 12, 2028
Effective Interest Rate	1.46%
Total borrowings at par value	$ 682	733
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 682	733
Senior Notes [Member] \| 1.750% 7-Year Senior Notes, Due 10/15/2028 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.75%
Debt Instrument, Term	7 years
Debt Instrument, Maturity Date	Oct. 15, 2028
Effective Interest Rate	1.89%
Total borrowings at par value	$ 700
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 700
Senior Notes [Member] \| 1.95% 12-Year Senior Notes, Due 7/24/2029 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.95%
Debt Instrument, Term	12 years
Debt Instrument, Maturity Date	Jul. 24, 2029
Effective Interest Rate	2.08%
Total borrowings at par value	$ 796	855
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 796	855
Senior Notes [Member] \| 2.60% 10-Year Senior Notes, Due 10/1/2029 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.60%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Oct. 01, 2029
Effective Interest Rate	2.74%
Total borrowings at par value	$ 900	900
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 900	900
Senior Notes [Member] \| 4.497% 10-Year Senior Notes, Due 3/25/2030 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	4.497%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Mar. 25, 2030
Total borrowings at par value		1,100
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal		1,100
Senior Notes [Member] \| 0.80% 9-Year Senior Notes, Due 10/18/2030 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.80%
Debt Instrument, Term	9 years
Debt Instrument, Maturity Date	Oct. 18, 2030
Effective Interest Rate	0.89%
Total borrowings at par value	$ 1,990
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,990
Senior Notes [Member] \| 0.875% 12-Year Senior Notes, Due 10/1/2031 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	0.875%
Debt Instrument, Term	12 years
Debt Instrument, Maturity Date	Oct. 01, 2031
Effective Interest Rate	1.13%
Total borrowings at par value	$ 1,023	1,099
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,023	1,099
Senior Notes [Member] \| 2.00% 10-Year Senior Notes, Due 10/15/2031 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.00%
Debt Instrument, Term	10 years
Debt Instrument, Maturity Date	Oct. 15, 2031
Effective Interest Rate	2.23%
Total borrowings at par value	$ 1,200
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,200
Senior Notes [Member] \| 2.375% 12-Year Senior Notes, Due 4/15/2032 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.375%
Debt Instrument, Term	12 years
Debt Instrument, Maturity Date	Apr. 15, 2032
Effective Interest Rate	2.55%
Total borrowings at par value	$ 682	733
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 682	733
Senior Notes [Member] \| 1.125% 12-Year Senior Notes Due 10/18/2033 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.125%
Debt Instrument, Term	12 years
Debt Instrument, Maturity Date	Oct. 18, 2033
Effective Interest Rate	1.21%
Total borrowings at par value	$ 1,706
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,706
Senior Notes [Member] \| 2.875% 20-Year Senior Notes, Due 7/24/2037 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.875%
Debt Instrument, Term	20 years
Debt Instrument, Maturity Date	Jul. 24, 2037
Effective Interest Rate	2.94%
Total borrowings at par value	$ 796	855
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 796	855
Senior Notes [Member] \| 1.50% 20-Year Senior Notes, Due 10/1/2039 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.50%
Debt Instrument, Term	20 years
Debt Instrument, Maturity Date	Oct. 01, 2039
Effective Interest Rate	1.73%
Total borrowings at par value	$ 1,023	1,099
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,023	1,099
Senior Notes [Member] \| 2.80% 20-Year Senior Notes, Due 10/15/2041 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.80%
Debt Instrument, Term	20 years
Debt Instrument, Maturity Date	Oct. 15, 2041
Effective Interest Rate	2.90%
Total borrowings at par value	$ 1,200
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,200
Senior Notes [Member] \| 1.625% 20-Year Senior Notes, Due 10/18/2041 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.625%
Debt Instrument, Term	20 years
Debt Instrument, Maturity Date	Oct. 18, 2041
Effective Interest Rate	1.78%
Total borrowings at par value	$ 1,421
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,421
Senior Notes [Member] \| 5.30% 30-Year Senior Notes, Due 2/1/2044 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	5.30%
Debt Instrument, Term	30 years
Debt Instrument, Maturity Date	Feb. 01, 2044
Effective Interest Rate	5.37%
Total borrowings at par value	$ 400	400
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 400	400
Senior Notes [Member] \| 4.10% 30-Year Senior Notes, Due 8/15/2047 [Member]
Debt Instrument [Line Items]
Stated Interest Rate	4.10%
Debt Instrument, Term	30 years
Debt Instrument, Maturity Date	Aug. 15, 2047
Effective Interest Rate	4.23%
Total borrowings at par value	$ 750	750
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 750	750
Senior Notes [Member] \| 1.875% 30-Year Senior Notes, Due 10/1/2049 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	1.875%
Debt Instrument, Term	30 years
Debt Instrument, Maturity Date	Oct. 01, 2049
Effective Interest Rate	1.98%
Total borrowings at par value	$ 1,137	1,222
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 1,137	1,222
Senior Notes [Member] \| 2.00% 30-Year Senior Notes, Due 10/18/2051 (euro-denominated) [Member]
Debt Instrument [Line Items]
Stated Interest Rate	2.00%
Debt Instrument, Term	30 years
Debt Instrument, Maturity Date	Oct. 18, 2051
Effective Interest Rate	2.07%
Total borrowings at par value	$ 853
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	853
Other Debt [Member]
Debt Instrument [Line Items]
Total borrowings at par value	76	5
Total borrowings at carrying value	76	5
Maturities of Long-term Debt [Abstract]
Total Repayments of Principal	$ 76	$ 5

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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Description of a feature that permits the issuer of the debt to repay or convert it before the stated maturity date (early retirement date). The description may include such items as the call price, the period that the issuer can call the debt, including the earliest call date, and other significant terms of the call feature, which may include the debt holders' ability to convert the debt to equity if the call option is exercised and contingent events that trigger the issuer's ability to call the debt.

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- Definition

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.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

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- Definition

Amount, after accumulated amortization, of debt discount (premium).

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