Basis of Presentation (Details) - USD ($) $ in Millions	3 Months Ended
	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill, net		$ 2,716	$ 2,820
Discontinued Operations, Disposed of by Means Other than Sale, Donation | PARC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Goodwill written off, before-tax	$ 115
Goodwill written off, after-tax	$ 110