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v3.19.3.a.u2

Shareholders' Equity (Shares of Treasury Stock) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |  |
Beginning balance (in shares) | 36,483,270 | 36,500,000 |
Beginning balance | $ 817 | $ 818 |
Treasury stock acquired, net of ESPP shares issued (in shares) | 0 | 0 |
Treasury stock acquired, net of ESPP shares issued | $ 0 | $ (1) |
Ending balance (in shares) | 36,511,053 | 36,483,270 | 36,500,000
Ending balance | $ 817 | $ 817 | $ 818
Dividends declared to shareholders | $ 46 | $ 44 | $ 45

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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=27012166&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=6877327&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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