Acquisitions and Divestitures - Divestitures (Details) $ in Millions	9 Months Ended
Sep. 30, 2021 businessDivested	Sep. 30, 2020 USD ($)
Business Combination and Asset Acquisition [Abstract]
Number of businesses sold \| businessDivested	0
Operating income of businesses held for sale \| $		$ 40

Amount of operating income (loss) attributable to disposal group, including, but not limited to, discontinued operation.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 5B
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=SL51721673-107760

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