Other Charges - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Restructuring Cost and Reserve [Line Items]
Other charges (benefits)	$ 18	$ (4)
Other charges, net of tax expense (benefit)	(45)	(1)
Merger-related and other charges
Restructuring Cost and Reserve [Line Items]
Other charges (benefits)	18	(8)
Other charges, merger related, net of tax expense (benefit)		(5)
Resolution of U.S. Income Tax Audit
Restructuring Cost and Reserve [Line Items]
Other charges, net of tax expense (benefit)	(124)
Accrual for Potential Settlement of International Income Tax Matter
Restructuring Cost and Reserve [Line Items]
Other charges, net of tax expense (benefit)	85
Total cost reduction program related charges
Restructuring Cost and Reserve [Line Items]
Other charges (benefits)	$ 0
Cost reduction program charges (benefits)		4
Cost reduction program charges, net of tax expense (benefit)		$ 4