Shareholders' Equity - Accelerated Share Repurchases (Details) - 2021 ASR - Barclays Bank - USD ($) $ / shares in Units, shares in Millions, $ in Billions	Jan. 04, 2022	Feb. 28, 2022
Equity, Class of Treasury Stock [Line Items]
ASR agreement, amount	$ 1.5	$ 1.5
Payments for ASR, amount	$ 1.5
ASR percent of notional amount received in shares	80.00%
Shares repurchased under ASR agreement (in shares)	11.6	2.7
Share price (in dollars per share)	$ 103.34
Transfer of shares to treasury stock value	$ 1.2
ASR, shares to be received at the end of program as a percent of notional amount		20.00%
Forward contract
Equity, Class of Treasury Stock [Line Items]
Forward contract, notional amount	$ 0.3