Debt (Narrative) (Details) - USD ($)		1 Months Ended		6 Months Ended
	Apr. 01, 2021	Nov. 30, 2022	May 31, 2022	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Oct. 31, 2022	Oct. 30, 2022
Debt Instrument [Line Items]
Commercial paper outstanding				$ 308,000,000
Debt, weighted average interest rate				5.50%
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				$ 118,000,000
Senior notes – 5.45% due 2053
Debt Instrument [Line Items]
Interest rate				5.45%	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				$ 308,000,000		0	$ 2,800,000,000	$ 2,000,000,000
Effective interest rate (percent)				5.33%
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		0
Revolving credit facility | Uncommitted Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, borrowing capacity			$ 250,000,000	200,000,000
Debt instrument, term			1 year
Revolving credit facility, amount outstanding				200,000,000
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