Stockholders' Equity - Stock Repurchases (Details) - USD ($) $ in Billions	Mar. 31, 2022	Mar. 31, 2021
Stockholders' Equity Note [Abstract]
Common stock authorized to be repurchased		$ 5.0
Remaining authorized repurchase amount	$ 4.4

Amount remaining of a stock repurchase plan authorized.

No definition available.

Name:	us-gaap_StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant