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.

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

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- Definition

Amount allocated to previously issued common shares repurchased by the issuing entity and held in treasury.

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-Name Accounting Standards Codification
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-SubTopic 30
-Section 45
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-Name Accounting Standards Codification
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- Definition

Number of shares that have been repurchased during the period and are being held in treasury.

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Preferred and Common Stock - Details For the Share Repurchases (Details) - USD ($) $ / shares in Units, $ in Millions											12 Months Ended
	Nov. 21, 2019	Nov. 20, 2019	Nov. 19, 2019	Nov. 18, 2019	Oct. 03, 2019	Aug. 08, 2019	Jun. 12, 2019	May 06, 2019	Apr. 29, 2019	Feb. 21, 2019	Dec. 31, 2019
February 2019 ASR
Accelerated Share Repurchases [Line Items]
Number of shares									4,525,592	31,908,831	36,434,423
Treasury stock acquired, average price per share (in usd per share)											$ 19.21
Total											$ 700
May 2019 ASR
Accelerated Share Repurchases [Line Items]
Number of shares							1,561,249	7,455,732			9,016,981
Treasury stock acquired, average price per share (in usd per share)											$ 22.18
Total											$ 200
August 2019 ASR
Accelerated Share Repurchases [Line Items]
Number of shares					983,107	6,791,172					7,774,279
Treasury stock acquired, average price per share (in usd per share)											$ 25.73
Total											$ 200
Share Repurchases Program November 2019
Accelerated Share Repurchases [Line Items]
Number of shares	400,681	370,000	428,000	428,000							1,626,681
Treasury stock acquired, average price per share (in usd per share)											$ 30.74
Total											$ 50
Accelerated Share Repurchase Program
Accelerated Share Repurchases [Line Items]
Number of shares											54,852,364
Treasury stock acquired, average price per share (in usd per share)											$ 20.97
Total											$ 1,150