Commitments, Contingencies and Guarantees (Details) $ in Millions	1 Months Ended	12 Months Ended
Apr. 30, 2019 USD ($)	Dec. 31, 2020 item
Commitments, Contingencies and Guarantees
Number of states failed to report Rx savings prices		8
Number of claims		2
Insurer retention \| $	$ 3

The total number of new claims filed pertaining to a loss contingency during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

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