Financing (Components Of Debt) (Table) (Details) € in Millions, SFr in Millions, $ in Millions, ¥ in Billions	Dec. 31, 2021 USD ($)	Dec. 31, 2021 EUR (€)	Dec. 31, 2021 JPY (¥)	Dec. 31, 2021 CHF (SFr)	Dec. 10, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 EUR (€)	Dec. 31, 2020 JPY (¥)	Dec. 31, 2020 CHF (SFr)	Dec. 31, 2001 USD ($)
Debt Instrument [Line Items]
Total debt	$ 22,176					$ 21,204
Less: currently payable	8					11
Long-term debt	22,168					21,193
U.S. dollar-denominated commercial paper | Commercial paper
Debt Instrument [Line Items]
Total debt	1,440					0
Euro-denominated commercial paper | Commercial paper
Debt Instrument [Line Items]
Total debt	1,366	€ 1,200				611	€ 500
Zero-coupon LYONS due 2021 | Convertible debt
Debt Instrument [Line Items]
Total debt	$ 0					$ 24
Interest rate of debt instrument	0.00%	0.00%	0.00%	0.00%		0.00%	0.00%	0.00%	0.00%
Debt instrument, face amount										$ 830
0.352% senior unsecured notes due 2021 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 0					$ 290
Interest rate of debt instrument	0.352%	0.352%	0.352%	0.352%		0.352%	0.352%	0.352%	0.352%
Debt instrument, face amount | ¥								¥ 30.0
Floating rate senior unsecured notes due 2022 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 284					$ 305
Debt instrument, face amount | €		€ 250					€ 250
2.05% senior unsecured notes due 2022 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 699					$ 698
Interest rate of debt instrument	2.05%	2.05%	2.05%	2.05%		2.05%	2.05%	2.05%	2.05%
0.5% senior unsecured bonds due 2023 | Bonds
Debt Instrument [Line Items]
Total debt	$ 592					$ 611
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
1.7% senior notes due 2024 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 1,021					$ 1,096
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	$ 698					$ 697
Interest rate of debt instrument	2.20%	2.20%	2.20%	2.20%		2.20%	2.20%	2.20%	2.20%
2.5% senior unsecured notes due 2025 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 0					$ 975
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
3.35% senior unsecured notes due 2025 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 498					$ 498
Interest rate of debt instrument	3.35%	3.35%	3.35%	3.35%		3.35%	3.35%	3.35%	3.35%
0.2% senior unsecured notes due 2026 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 1,416					$ 1,520
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	$ 907					$ 975
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	$ 267					$ 297
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	$ 680					$ 729
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	$ 1,413					$ 1,518
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	$ 233					$ 241
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	$ 795					$ 795
Interest rate of debt instrument	2.60%	2.60%	2.60%	2.60%		2.60%	2.60%	2.60%	2.60%
2.5% senior notes due 2030 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 910					$ 978
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	$ 1,980					$ 2,127
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	$ 461					$ 514
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	$ 1,406					$ 1,511
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	$ 890					$ 889
Interest rate of debt instrument	3.25%	3.25%	3.25%	3.25%		3.25%	3.25%	3.25%	3.25%
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%
1.8% senior unsecured notes due 2049 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 844					$ 907
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	$ 889					$ 889
Interest rate of debt instrument	3.40%	3.40%	3.40%	3.40%		3.40%	3.40%	3.40%	3.40%
2.6% senior unsecured notes due 2050 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 980					$ 979
Interest rate of debt instrument	2.60%	2.60%	2.60%	2.60%		2.60%	2.60%	2.60%	2.60%
2.8% senior unsecured notes due 2051 | Senior notes
Debt Instrument [Line Items]
Total debt	$ 983					$ 0
Interest rate of debt instrument	2.80%	2.80%	2.80%	2.80%	2.80%
Debt instrument, face amount					$ 1,000
Other
Debt Instrument [Line Items]
Total debt	$ 25					$ 31