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Schedule II. Condensed Financial Information of Registrant (Parent Company) (Schedule of Condensed Financial Information of Registrant, Statements of Cash Flows) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Cash Flows from Operating Activities |  |  |
Net income | $ 894 | $ 1,202 | $ 690
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Net investment losses | 199 | (120) | 54
Other, net | (192) | (76) | (145)
Net cash flows provided by operating activities | 2,502 | 1,997 | 1,775
Cash Flows from Investing Activities |  |  |
Change in short term investments | 155 | (83) | (39)
Other, net | (10) | 1 | 16
Net cash flows used by investing activities | (1,512) | (1,228) | (705)
Cash Flows from Financing Activities |  |  |
Dividends paid to common stockholders | (982) | (621) | (950)
Proceeds from the issuance of debt | 0 | 0 | 495
Repayment of debt | 0 | 0 | (419)
Purchase of treasury stock | (39) | (18) | (18)
Other, net | (11) | (9) | (10)
Net cash flows used by financing activities | (1,032) | (648) | (902)
Net change in cash | (61) | 117 | 177
Cash, beginning of year | 536 | 419 | 242
Cash, end of period | 475 | 536 | 419
Parent Company |  |  |
Cash Flows from Operating Activities |  |  |
Net income | 894 | 1,202 | 690
Adjustments to reconcile net income to net cash flows provided by operating activities: |  |  |
Equity in net income of subsidiaries | (993) | (1,304) | (812)
Dividends received from subsidiaries | 990 | 880 | 975
Net investment losses | 0 | 0 | 20
Other, net | 28 | 33 | 26
Net cash flows provided by operating activities | 919 | 811 | 899
Cash Flows from Investing Activities |  |  |
Change in short term investments | 114 | (163) | 2
Capital contributions to subsidiaries | 0 | 0 | (1)
Other, net | 0 | 0 | 0
Net cash flows used by investing activities | 114 | (163) | 1
Cash Flows from Financing Activities |  |  |
Dividends paid to common stockholders | (982) | (621) | (950)
Proceeds from the issuance of debt | 0 | 0 | 495
Repayment of debt | 0 | 0 | (419)
Purchase of treasury stock | (39) | (18) | (18)
Other, net | (11) | (8) | (9)
Net cash flows used by financing activities | (1,032) | (647) | (901)
Net change in cash | 1 | 1 | (1)
Cash, beginning of year | 1 | 0 | 1
Cash, end of period | $ 2 | $ 1 | $ 0

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