Debt - Summary of Outstanding Debt (Details) € in Millions	1 Months Ended		12 Months Ended
	Jan. 31, 2022 EUR (€)	Jun. 30, 2021 EUR (€)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Nov. 30, 2021 USD ($)	Sep. 30, 2021 EUR (€)
SHORT-TERM
Commercial paper			$ 278,000,000	$ 2,527,000,000
Other borrowings (primarily non U.S.)			885,000,000	724,000,000
Total short-term debt			1,163,000,000	3,251,000,000
Long-term
Carrying value of long-term debt including current portion			13,044,000,000	12,903,000,000
Less: current portion of long-term debt			(1,709,000,000)	(751,000,000)
Total long-term debt			11,335,000,000	12,152,000,000
Total debt			14,207,000,000	16,154,000,000
Repayments of long-term debt		€ 600	$ 1,468,000,000	2,681,000,000	$ 1,583,000,000
3.875% Euro denominated notes due 2021
Debt Instrument [Line Items]
Interest rate		3.875%	3.875%
Long-term
Carrying value of long-term debt including current portion			$ 0	748,000,000
0.250% Euro denominated notes due 2022
Debt Instrument [Line Items]
Interest rate			0.25%
Long-term
Carrying value of long-term debt including current portion			$ 1,137,000,000	1,226,000,000
0.250% Euro denominated notes due 2022 | Subsequent Event
Debt Instrument [Line Items]
Interest rate	0.25%
Long-term
Repayments of long-term debt | €	€ 1,000
2.45% Notes due 2022
Debt Instrument [Line Items]
Interest rate			2.45%			2.45%
Long-term
Carrying value of long-term debt including current portion			$ 0	599,000,000
Debt instrument, face amount						$ 600,000,000
2.20% Notes due 2022
Debt Instrument [Line Items]
Interest rate			2.20%
Long-term
Carrying value of long-term debt including current portion			$ 500,000,000	499,000,000
Debt instrument, face amount			$ 500,000,000
2.70% Notes due 2023
Debt Instrument [Line Items]
Interest rate			2.70%
Long-term
Carrying value of long-term debt including current portion			$ 500,000,000	499,000,000
2.00% Euro denominated notes due 2023
Debt Instrument [Line Items]
Interest rate			2.00%
Long-term
Carrying value of long-term debt including current portion			$ 759,000,000	832,000,000
5.875% GBP denominated notes due 2023
Debt Instrument [Line Items]
Interest rate			5.875%
Long-term
Carrying value of long-term debt including current portion			$ 432,000,000	460,000,000
1.20% Euro denominated notes due 2024
Debt Instrument [Line Items]
Interest rate			1.20%
Long-term
Carrying value of long-term debt including current portion			$ 625,000,000	671,000,000
1.875% Euro denominated notes due 2024
Debt Instrument [Line Items]
Interest rate			1.875%
Long-term
Carrying value of long-term debt including current portion			$ 356,000,000	389,000,000
2.65% Notes due 2025
Debt Instrument [Line Items]
Interest rate			2.65%
Long-term
Carrying value of long-term debt including current portion			$ 399,000,000	398,000,000
1.625% Euro denominated notes due 2025
Debt Instrument [Line Items]
Interest rate			1.625%
Long-term
Carrying value of long-term debt including current portion			$ 565,000,000	607,000,000
Euro Denominated 0.000% Notes Due 2026
Debt Instrument [Line Items]
Interest rate			0.00%				0.00%
Long-term
Carrying value of long-term debt including current portion			$ 799,000,000	0
Debt instrument, face amount | €							€ 700
3.20% Notes due 2026
Debt Instrument [Line Items]
Interest rate			3.20%
Long-term
Carrying value of long-term debt including current portion			$ 725,000,000	725,000,000
3.434% Notes due 2026
Debt Instrument [Line Items]
Interest rate			3.434%
Long-term
Carrying value of long-term debt including current portion			$ 197,000,000	196,000,000
1.652% Euro denominated notes due 2027
Debt Instrument [Line Items]
Interest rate			1.652%
Long-term
Carrying value of long-term debt including current portion			$ 94,000,000	100,000,000
0.250% Euro denominated notes due 2027
Debt Instrument [Line Items]
Interest rate			0.25%
Long-term
Carrying value of long-term debt including current portion			$ 850,000,000	914,000,000
1.00% Euro denominated notes due 2028
Debt Instrument [Line Items]
Interest rate			1.00%
Long-term
Carrying value of long-term debt including current portion			$ 879,000,000	966,000,000
1.10% Notes due 2030
Debt Instrument [Line Items]
Interest rate			1.10%
Long-term
Carrying value of long-term debt including current portion			$ 696,000,000	696,000,000
1.90% Euro denominated notes due 2030
Debt Instrument [Line Items]
Interest rate			1.90%
Long-term
Carrying value of long-term debt including current portion			$ 118,000,000	127,000,000
0.550% Euro denominated notes due 2032
Debt Instrument [Line Items]
Interest rate			0.55%
Long-term
Carrying value of long-term debt including current portion			$ 847,000,000	909,000,000
Euro Denominated 0.375% Notes Due 2033
Debt Instrument [Line Items]
Interest rate			0.375%				0.375%
Long-term
Carrying value of long-term debt including current portion			$ 565,000,000	0
Debt instrument, face amount | €							€ 500
3.55% Notes due 2042
Debt Instrument [Line Items]
Interest rate			3.55%
Long-term
Carrying value of long-term debt including current portion			$ 664,000,000	664,000,000
2.00% Notes due 2050
Debt Instrument [Line Items]
Interest rate			2.00%
Long-term
Carrying value of long-term debt including current portion			$ 296,000,000	296,000,000
Euro Denominated 1.000% Notes Due 2051
Debt Instrument [Line Items]
Interest rate			1.00%				1.00%
Long-term
Carrying value of long-term debt including current portion			$ 788,000,000	0
Debt instrument, face amount | €							€ 700
Non U.S. borrowings
Long-term
Carrying value of long-term debt including current portion			243,000,000	372,000,000
Other
Long-term
Carrying value of long-term debt including current portion			10,000,000	10,000,000
Derivatives Designated as Hedging Instruments - Fair Value | Interest rate swaps | Derivatives Designated as Hedging Instruments:
Long-term
Adjustment to carrying value			$ 42,000,000	$ 79,000,000