Equity (Details) - USD ($) $ in Billions	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Nov. 30, 2019
Stockholders' Equity Note [Abstract]
Authorized share repurchase			$ 1.0
Common stock withheld from certain employees (in shares)	18,581	105,787

Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration