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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- Definition

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

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Common Stock - Share Based Compensation Table (Details) - USD ($) $ / shares in Units, $ in Millions					6 Months Ended
	Jun. 12, 2019	May 06, 2019	Apr. 29, 2019	Feb. 21, 2019	Jun. 30, 2019
February 2019 ASR
Share-based Compensation Arrangement by Share-based Payment Award [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
Share-based Compensation Arrangement by Share-based Payment Award [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
Accelerated Share Repurchase Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares					45,451,404
Treasury stock acquired, average price per share (in usd per share)					$ 19.80
Total					$ 900