Background and Basis of Presentation (Narrative) (Details) - January 2021 Share Repurchase Program [Member] - USD ($)	Jun. 30, 2022	Oct. 28, 2021	Jan. 31, 2021
Equity, Class of Treasury Stock [Line Items]
Planned share repurchase program		$ 3,500,000,000	$ 2,000,000,000
Stock repurchase program, remaining authorized repurchase amount	$ 742,000,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_EquityClassOfTreasuryStockLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration