Accumulated Other Comprehensive Loss (Shares of Treasury Stock) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
Feb. 18, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance (in shares)		38,321,603	36,500,000
Beginning balance		$ 864	$ 817
Treasury stock acquired, net of ESPP shares issued (in shares)		1,900,000	1,800,000
Treasury stock acquired, net of ESPP shares issued		$ 79	$ 47
Ending balance (in shares)		40,197,450	38,321,603	36,500,000
Ending balance		$ 943	$ 864	$ 817
Dividends declared to shareholders		$ 63	$ 57	$ 46
Cash dividends declared per share (usd per share)		$ 0.44	$ 0.40	$ 0.32
Subsequent Event
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Cash dividends declared per share (usd per share)	$ 0.12

Aggregate dividends declared during the period for each share of common stock outstanding.

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Amount of paid and unpaid common stock dividends declared with the form of settlement in cash.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends.

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

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The amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury.

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

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