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Debt (Narrative) (Details) - USD ($)		1 Months Ended	3 Months Ended
Debt (Narrative) (Details) - USD ($)	Apr. 01, 2021	Nov. 30, 2022	Mar. 31, 2023	Dec. 31, 2022	Oct. 31, 2022	Oct. 30, 2022	May 31, 2022
Debt Instrument [Line Items]
Commercial paper outstanding			$ 594,000,000
Debt, weighted average interest rate			5.19%
Other Debt Facilities
Debt Instrument [Line Items]
Revolving credit facility, amount outstanding			$ 0	$ 0
Other credit and overdraft facilities			112,000,000
Letters of credit			$ 102,000,000
Senior notes – 5.45% due 2053
Debt Instrument [Line Items]
Interest rate			5.45%
Senior notes – 5.750% due 2032
Debt Instrument [Line Items]
Interest rate			5.75%		5.75%
Senior notes – 6.25% due 2052
Debt Instrument [Line Items]
Interest rate			6.25%		6.25%
3.30% Senior Debt Obligations Due March 2023
Debt Instrument [Line Items]
Interest rate		3.30%
Commercial paper
Debt Instrument [Line Items]
Short-term debt			$ 594,000,000	0	$ 2,800,000,000	$ 2,000,000,000
Effective interest rate (percent)			5.22%
Revolving credit facility \| New Facility
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity	$ 2,800,000,000
Debt instrument, term	5 years
Revolving credit facility, amount outstanding			$ 0
Revolving credit facility \| Uncommitted Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity							$ 250,000,000
Revolving credit facility, amount outstanding			250,000,000
Revolving credit facility \| Old Facility
Debt Instrument [Line Items]
Revolving credit facility, amount outstanding				$ 0
Revolving credit facility \| Line of Credit \| New Facility
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity	$ 1,800,000,000		$ 1,000,000,000
Debt instrument, term	5 years		364 days
Senior Notes \| Senior notes – 5.45% due 2053
Debt Instrument [Line Items]
Debt instrument face amount			$ 600,000,000
Senior Notes \| Senior notes – 5.750% due 2032
Debt Instrument [Line Items]
Debt instrument face amount					500,000,000
Senior Notes \| Senior notes – 6.25% due 2052
Debt Instrument [Line Items]
Debt instrument face amount					$ 500,000,000
Senior Notes \| 3.30% Senior Debt Obligations Due March 2023
Debt Instrument [Line Items]
Repayments of debt		$ 350,000,000