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Dividends (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions |  | 12 Months Ended
--- | --- | ---
Feb. 11, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Dividends Payable [Line Items] |  |  |  |
Maximum dividend payable without prior permission of DOI of states domicile |  | $ 252 |  |
Payments of ordinary dividends |  | $ 191 | $ 121 | $ 114
Subsequent Event |  |  |  |
Dividends Payable [Line Items] |  |  |  |
Quarterly dividend declared (in dollars per share) | $ 0.6350 |  |  |

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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 Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3291-108585 + Details
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