Acquisitions and Divestitures - Acquisitions (Details) - businessAcquired	9 Months Ended	12 Months Ended
Sep. 30, 2021	Dec. 31, 2020
Business Combination and Asset Acquisition [Abstract]
Number of acquisitions	0	0

The number of businesses acquired by the entity during the period.

No definition available.

Name:	us-gaap_NumberOfBusinessesAcquired
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration