Financing (Components of Debt) (Details) € in Millions, SFr in Millions, $ in Millions, ¥ in Billions	Dec. 31, 2023 USD ($)	Dec. 31, 2023 EUR (€)	Dec. 31, 2023 CHF (SFr)	Dec. 31, 2023 JPY (¥)	Dec. 08, 2023 CHF (SFr)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 EUR (€)	Dec. 31, 2022 CHF (SFr)	Dec. 31, 2022 JPY (¥)
Debt Instrument [Line Items]
Total debt	$ 18,402					$ 19,677
Less: currently payable	(1,695)					(591)
Long-term debt	16,707					19,086
Euro-denominated commercial paper | Commercial paper
Debt Instrument [Line Items]
Total debt	1,026	€ 929				2,013	€ 1,900
0.5% senior unsecured bonds due 2023 | Bonds
Debt Instrument [Line Items]
Total debt	$ 0					$ 584
Interest rate of debt instrument	0.50%	0.50%	0.50%	0.50%		0.50%	0.50%	0.50%	0.50%
Debt instrument, face amount | SFr			SFr 540		SFr 540			SFr 540
1.7% senior notes due 2024 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 993					$ 962
Interest rate of debt instrument	1.70%	1.70%	1.70%	1.70%		1.70%	1.70%	1.70%	1.70%
Debt instrument, face amount | €		€ 900					€ 900
2.2% senior unsecured notes due 2024 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 699					$ 698
Interest rate of debt instrument	2.20%	2.20%	2.20%	2.20%		2.20%	2.20%	2.20%	2.20%
Debt instrument, face amount	$ 700					$ 700
3.35% senior unsecured notes due 2025 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 499					$ 499
Interest rate of debt instrument	3.35%	3.35%	3.35%	3.35%		3.35%	3.35%	3.35%	3.35%
Debt instrument, face amount	$ 500					$ 500
0.2% senior unsecured notes due 2026 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 1,376					$ 1,333
Interest rate of debt instrument	0.20%	0.20%	0.20%	0.20%		0.20%	0.20%	0.20%	0.20%
Debt instrument, face amount | €		€ 1,300					€ 1,300
2.1% senior notes due 2026 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 881					$ 854
Interest rate of debt instrument	2.10%	2.10%	2.10%	2.10%		2.10%	2.10%	2.10%	2.10%
Debt instrument, face amount | €		€ 800					€ 800
0.3% senior unsecured notes due 2027 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 218					$ 234
Interest rate of debt instrument	0.30%	0.30%	0.30%	0.30%		0.30%	0.30%	0.30%	0.30%
Debt instrument, face amount | ¥				¥ 30.8					¥ 30.8
1.2% senior unsecured notes due 2027 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 660					$ 639
Interest rate of debt instrument	1.20%	1.20%	1.20%	1.20%		1.20%	1.20%	1.20%	1.20%
Debt instrument, face amount | €		€ 600					€ 600
0.45% senior unsecured notes due 2028 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 1,374					$ 1,331
Interest rate of debt instrument	0.45%	0.45%	0.45%	0.45%		0.45%	0.45%	0.45%	0.45%
Debt instrument, face amount | €		€ 1,300					€ 1,300
1.125% senior unsecured bonds due 2028 | Bonds
Debt Instrument [Line Items]
Total debt	$ 252					$ 230
Interest rate of debt instrument	1.125%	1.125%	1.125%	1.125%		1.125%	1.125%	1.125%	1.125%
Debt instrument, face amount | SFr			SFr 210					SFr 210
2.6% senior unsecured notes due 2029 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 797					$ 796
Interest rate of debt instrument	2.60%	2.60%	2.60%	2.60%		2.60%	2.60%	2.60%	2.60%
Debt instrument, face amount	$ 800					$ 800
2.5% senior notes due 2030 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 883					$ 856
Interest rate of debt instrument	2.50%	2.50%	2.50%	2.50%		2.50%	2.50%	2.50%	2.50%
Debt instrument, face amount | €		€ 800					€ 800
0.75% senior unsecured notes due 2031 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 1,923					$ 1,863
Interest rate of debt instrument	0.75%	0.75%	0.75%	0.75%		0.75%	0.75%	0.75%	0.75%
Debt instrument, face amount | €		€ 1,800					€ 1,800
0.65% senior unsecured notes due 2032 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 376					$ 404
Interest rate of debt instrument	0.65%	0.65%	0.65%	0.65%		0.65%	0.65%	0.65%	0.65%
Debt instrument, face amount | ¥				¥ 53.2					¥ 53.2
1.35% senior unsecured notes due 2039 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 1,365					$ 1,323
Interest rate of debt instrument	1.35%	1.35%	1.35%	1.35%		1.35%	1.35%	1.35%	1.35%
Debt instrument, face amount | €		€ 1,300					€ 1,300
3.25% senior unsecured notes due 2039 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 891					$ 890
Interest rate of debt instrument	3.25%	3.25%	3.25%	3.25%		3.25%	3.25%	3.25%	3.25%
Debt instrument, face amount	$ 900					$ 900
4.375% senior unsecured notes due 2045 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 499					$ 499
Interest rate of debt instrument	4.375%	4.375%	4.375%	4.375%		4.375%	4.375%	4.375%	4.375%
Debt instrument, face amount	$ 500					$ 500
1.8% senior unsecured notes due 2049 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 819					$ 794
Interest rate of debt instrument	1.80%	1.80%	1.80%	1.80%		1.80%	1.80%	1.80%	1.80%
Debt instrument, face amount | €		€ 750					€ 750
3.4% senior unsecured notes due 2049 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 890					$ 889
Interest rate of debt instrument	3.40%	3.40%	3.40%	3.40%		3.40%	3.40%	3.40%	3.40%
Debt instrument, face amount	$ 900					$ 900
2.6% senior unsecured notes due 2050 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 981					$ 981
Interest rate of debt instrument	2.60%	2.60%	2.60%	2.60%		2.60%	2.60%	2.60%	2.60%
Debt instrument, face amount	$ 1,000					$ 1,000
2.8% senior unsecured notes due 2051 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 984					$ 984
Interest rate of debt instrument	2.80%	2.80%	2.80%	2.80%		2.80%	2.80%	2.80%	2.80%
Debt instrument, face amount	$ 1,000					$ 1,000
Other
Debt Instrument [Line Items]
Total debt	$ 16					$ 21