Financing (Components of Debt) (Details) € in Millions, SFr in Millions, $ in Millions, ¥ in Billions	Jun. 30, 2023 USD ($)	Jun. 30, 2023 EUR (€)	Jun. 30, 2023 CHF (SFr)	Jun. 30, 2023 JPY (¥)	Dec. 31, 2022 USD ($)	Dec. 31, 2022 EUR (€)	Dec. 31, 2022 CHF (SFr)	Dec. 31, 2022 JPY (¥)
Debt Instrument [Line Items]
Total debt	$ 19,875				$ 19,677
Less: currently payable	(1,590)				(591)
Long-term debt	18,285				19,086
Other
Debt Instrument [Line Items]
Total debt	19				21
Commercial paper | Euro-denominated commercial paper
Debt Instrument [Line Items]
Total debt	2,045	€ 1,900			2,013	€ 1,900
Senior notes | 1.7% senior notes due 2024
Debt Instrument [Line Items]
Total debt	$ 981				$ 962
Interest rate of debt instrument	1.70%	1.70%	1.70%	1.70%	1.70%	1.70%	1.70%	1.70%
Aggregate principal amount | €		€ 900				€ 900
Senior notes | 2.2% senior notes due 2024
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%
Aggregate principal amount	$ 700				$ 700
Senior notes | 3.35% senior notes due 2025
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%
Aggregate principal amount	$ 500				$ 500
Senior notes | 0.2% senior notes due 2026
Debt Instrument [Line Items]
Total debt	$ 1,360				$ 1,333
Interest rate of debt instrument	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%	0.20%
Aggregate principal amount | €		€ 1,300				€ 1,300
Senior notes | 2.1% senior notes due 2026
Debt Instrument [Line Items]
Total debt	$ 871				$ 854
Interest rate of debt instrument	2.10%	2.10%	2.10%	2.10%	2.10%	2.10%	2.10%	2.10%
Aggregate principal amount | €		€ 800				€ 800
Senior notes | 0.3% senior notes due 2027
Debt Instrument [Line Items]
Total debt	$ 213				$ 234
Interest rate of debt instrument	0.30%	0.30%	0.30%	0.30%	0.30%	0.30%	0.30%	0.30%
Aggregate principal amount | ¥				¥ 30.8				¥ 30.8
Senior notes | 1.2% senior notes due 2027
Debt Instrument [Line Items]
Total debt	$ 652				$ 639
Interest rate of debt instrument	1.20%	1.20%	1.20%	1.20%	1.20%	1.20%	1.20%	1.20%
Aggregate principal amount | €		€ 600				€ 600
Senior notes | 0.45% senior notes due 2028
Debt Instrument [Line Items]
Total debt	$ 1,357				$ 1,331
Interest rate of debt instrument	0.45%	0.45%	0.45%	0.45%	0.45%	0.45%	0.45%	0.45%
Aggregate principal amount | €		€ 1,300				€ 1,300
Senior notes | 2.6% senior notes due 2029
Debt Instrument [Line Items]
Total debt	$ 796				$ 796
Interest rate of debt instrument	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%	2.60%
Aggregate principal amount	$ 800				$ 800
Senior notes | 2.5% senior notes due 2030
Debt Instrument [Line Items]
Total debt	$ 873				$ 856
Interest rate of debt instrument	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%	2.50%
Aggregate principal amount | €		€ 800				€ 800
Senior notes | 0.75% senior notes due 2031
Debt Instrument [Line Items]
Total debt	$ 1,900				$ 1,863
Interest rate of debt instrument	0.75%	0.75%	0.75%	0.75%	0.75%	0.75%	0.75%	0.75%
Aggregate principal amount | €		€ 1,800				€ 1,800
Senior notes | 0.65% senior notes due 2032
Debt Instrument [Line Items]
Total debt	$ 367				$ 404
Interest rate of debt instrument	0.65%	0.65%	0.65%	0.65%	0.65%	0.65%	0.65%	0.65%
Aggregate principal amount | ¥				¥ 53.2				¥ 53.2
Senior notes | 1.35% senior notes due 2039
Debt Instrument [Line Items]
Total debt	$ 1,349				$ 1,323
Interest rate of debt instrument	1.35%	1.35%	1.35%	1.35%	1.35%	1.35%	1.35%	1.35%
Aggregate principal amount | €		€ 1,300				€ 1,300
Senior notes | 3.25% senior notes due 2039
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%
Aggregate principal amount	$ 900				$ 900
Senior notes | 4.375% senior notes due 2045
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%
Aggregate principal amount	$ 500				$ 500
Senior notes | 1.8% senior notes due 2049
Debt Instrument [Line Items]
Total debt	$ 809				$ 794
Interest rate of debt instrument	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%	1.80%
Aggregate principal amount | €		€ 750				€ 750
Senior notes | 3.4% senior notes due 2049
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%
Aggregate principal amount	$ 900				$ 900
Senior notes | 2.6% senior notes due 2050
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%
Aggregate principal amount	$ 1,000				$ 1,000
Senior notes | 2.8% senior unsecured notes due 2051
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%
Aggregate principal amount	$ 1,000				$ 1,000
Bonds | 0.5% senior bonds due 2023
Debt Instrument [Line Items]
Total debt	$ 603				$ 584
Interest rate of debt instrument	0.50%	0.50%	0.50%	0.50%	0.50%	0.50%	0.50%	0.50%
Aggregate principal amount | SFr			SFr 540				SFr 540
Bonds | 1.125% senior bonds due 2028
Debt Instrument [Line Items]
Total debt	$ 237				$ 230
Interest rate of debt instrument	1.125%	1.125%	1.125%	1.125%	1.125%	1.125%	1.125%	1.125%
Aggregate principal amount | SFr			SFr 210				SFr 210