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Debt - Long-term And Short-term Debt (Details) € in Millions, $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2022 EUR (€)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2022 EUR (€)
SHORT-TERM
Commercial paper		$ 2,249		$ 278
Other bank borrowings (primarily non U.S.)		300		885
Total short-term debt		2,549		1,163
LONG-TERM
Carrying Value		13,907		13,044
Less: current portion of long-term debt		(1,074)		(1,709)
Total long-term debt		12,833		11,335
Total debt		16,456		14,207
Repayments of long-term debt		$ 1,166	$ 57
0.250% Euro denominated notes due 2022
LONG-TERM
Interest rate	0.25%	0.25%			0.25%
Carrying Value		$ 0		1,137
Repayments of long-term debt \| €	€ 1,000
2.20% Notes due 2022
LONG-TERM
Interest rate		2.20%			2.20%
Carrying Value		$ 500		500
2.70% Notes due 2023
LONG-TERM
Interest rate		2.70%			2.70%
Carrying Value		$ 500		500
2.00% Euro denominated notes due 2023
LONG-TERM
Interest rate		2.00%			2.00%
Carrying Value		$ 735		759
5.875% GBP denominated notes due 2023
LONG-TERM
Interest rate		5.875%			5.875%
Carrying Value		$ 415		432
1.20% Euro denominated notes due 2024
LONG-TERM
Interest rate		1.20%			1.20%
Carrying Value		$ 608		625
1.875% Euro denominated notes due 2024
LONG-TERM
Interest rate		1.875%			1.875%
Carrying Value		$ 342		356
2.65% Notes due 2025
LONG-TERM
Interest rate		2.65%			2.65%
Carrying Value		$ 399		399
1.625% Euro denominated notes due 2025
LONG-TERM
Interest rate		1.625%			1.625%
Carrying Value		$ 550		565
0.00% Euro denominated notes due 2026
LONG-TERM
Interest rate		0.00%			0.00%
Carrying Value		$ 777		799
3.20% Notes due 2026
LONG-TERM
Interest rate		3.20%			3.20%
Carrying Value		$ 725		725
3.434% Notes due 2026
LONG-TERM
Interest rate		3.434%			3.434%
Carrying Value		$ 198		197
1.652% Euro denominated notes due 2027
LONG-TERM
Interest rate		1.652%			1.652%
Carrying Value		$ 91		94
0.250% Euro denominated notes due 2027
LONG-TERM
Interest rate		0.25%			0.25%
Carrying Value		$ 828		850
1.00% Euro denominated notes due 2027
LONG-TERM
Interest rate		1.00%			1.00%
Carrying Value		$ 551
Debt instrument face amount \| €					€ 500
1.00% Euro denominated notes due 2028
LONG-TERM
Interest rate		1.00%			1.00%
Carrying Value		$ 824		879
1.10% Notes due 2030
LONG-TERM
Interest rate		1.10%			1.10%
Carrying Value		$ 696		696
1.90% Euro denominated notes due 2030
LONG-TERM
Interest rate		1.90%			1.90%
Carrying Value		$ 115		118
1.375% Euro denominated notes due 2031
LONG-TERM
Interest rate		1.375%			1.375%
Carrying Value		$ 821
Debt instrument face amount \| €					€ 750
0.550% Euro denominated notes due 2032
LONG-TERM
Interest rate		0.55%			0.55%
Carrying Value		$ 824		847
0.375% Euro denominated notes due 2033
LONG-TERM
Interest rate		0.375%			0.375%
Carrying Value		$ 550		565
1.625% Euro denominated notes due 2035
LONG-TERM
Interest rate		1.625%			1.625%
Carrying Value		$ 874
Debt instrument face amount \| €					€ 800
3.55% Notes due 2042
LONG-TERM
Interest rate		3.55%			3.55%
Carrying Value		$ 664		664
2.00% Notes due 2050
LONG-TERM
Interest rate		2.00%			2.00%
Carrying Value		$ 296		296
1.00% Euro denominated notes due 2051
LONG-TERM
Interest rate		1.00%			1.00%
Carrying Value		$ 767		788
Non U.S borrowings
LONG-TERM
Carrying Value		247		243
Other
LONG-TERM
Carrying Value		10		10
Derivatives Designated as Hedging Instruments: \| Fair Value Hedging \| Interest Rate Swap
LONG-TERM
Fair value decrease in debt related to hedge accounting		$ 4		$ 42