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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 |  |  |

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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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- Definition Amount of paid and unpaid common stock dividends declared with the form of settlement in cash. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770 + Details
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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29,30) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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