Equity impact of the cost of common and preferred stock that were repurchased during the period. Recorded using the cost method.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
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-Section 45
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
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-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Name:	us-gaap_TreasuryStockValueAcquiredCostMethod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Equity Equity Repurchase Program (Details) - USD ($) shares in Millions, $ in Millions	1 Months Ended	3 Months Ended
	Apr. 26, 2021	Mar. 31, 2021	Mar. 31, 2020	Apr. 01, 2021	Jan. 01, 2021
Equity, Class of Treasury Stock [Line Items]
Value of shares acquired		$ 123	$ 150
Number of shares acquired		2.4	2.7
Stock repurchase authorization amount				$ 2,500	$ 1,500
Subsequent Event [Member]
Equity, Class of Treasury Stock [Line Items]
Value of shares acquired	$ 27
Number of shares acquired	0.4