Acquisitions and Dispositions of Businesses - Completed Dispositions (Details) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2022 USD ($) disposition	Sep. 30, 2021 USD ($) disposition	Sep. 30, 2022 USD ($) disposition	Sep. 30, 2021 USD ($) disposition
Business Combination and Asset Acquisition [Abstract]
Number of dispositions \| disposition	0	2	3	3
Gain from sales of businesses \| $	$ 6	$ 1	$ 53	$ 2

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

Name:	us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration