Fair Value of Financial Instruments - Assets and Liabilities Carrying at Fair Value Measured on a Recurring Basis (Details) - USD ($) $ in Millions | 3 Months Ended | | |
Mar. 31, 2019 | Mar. 31, 2018 | Sep. 30, 2017 | Dec. 31, 2018 | Dec. 31, 2017 |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings | $ 271 | | | | |
Available-for-sale Securities | 21,605 | | | $ 21,109 | |
Derivative investments | 305 | | | 97 | |
Total financial assets at fair value | 2,536 | | | 2,466 | |
Funds withheld for reinsurance receivables, at fair value | 837 | | | 757 | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 1 | | | | |
Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
FHLB Common Stock, Fair Value | 0 | | | 0 | |
Cash and cash equivalents | 1,357 | | | | |
Equity securities | 441 | | | | |
Derivative investments | 1 | | | | |
Total financial assets at fair value | 2,288 | | | | |
FHLB common stock | 0 | | | 0 | |
Commercial mortgage loans | 0 | | | 0 | |
Investments, Affiliated Bank Loan, Fair Value Disclosure | 0 | | | 0 | |
Funds withheld for reinsurance receivables, at fair value | 0 | | | 0 | |
Total assets carried on balance sheet at amounts other than fair value | 0 | | | 0 | |
Liabilities Related to Investment Contracts, Fair Value Disclosure | 0 | | | 0 | |
Total liabilities carried on balance sheet at amounts other than fair value | 0 | | | 0 | |
Debt Instrument, Fair Value Disclosure | 0 | | | 0 | |
Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
FHLB Common Stock, Fair Value | 56 | | | 52 | |
Cash and cash equivalents | 0 | | | | |
Equity securities | 657 | | | | |
Derivative investments | 304 | | | | |
Total financial assets at fair value | 20,434 | | | | |
FHLB common stock | 0 | | | 0 | |
Commercial mortgage loans | 0 | | | 0 | |
Investments, Affiliated Bank Loan, Fair Value Disclosure | 0 | | | 0 | |
Funds withheld for reinsurance receivables, at fair value | 0 | | | 0 | |
Total assets carried on balance sheet at amounts other than fair value | 56 | | | 52 | |
Liabilities Related to Investment Contracts, Fair Value Disclosure | 0 | | | 0 | |
Total liabilities carried on balance sheet at amounts other than fair value | 543 | | | 520 | |
Debt Instrument, Fair Value Disclosure | 543 | | | 520 | |
Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
FHLB Common Stock, Fair Value | 0 | | | 0 | |
Cash and cash equivalents | 0 | | | | |
Equity securities | 20 | | | | |
Derivative investments | 0 | | | | |
Total financial assets at fair value | 2,536 | | | | |
FHLB common stock | 485 | | | 483 | |
Commercial mortgage loans | 12 | | | 187 | |
Investments, Affiliated Bank Loan, Fair Value Disclosure | 40 | | | 39 | |
Funds withheld for reinsurance receivables, at fair value | 5 | | | 8 | |
Total assets carried on balance sheet at amounts other than fair value | 741 | | | 728 | |
Liabilities Related to Investment Contracts, Fair Value Disclosure | 18,355 | | | 18,358 | |
Total liabilities carried on balance sheet at amounts other than fair value | 18,355 | | | 18,358 | |
Debt Instrument, Fair Value Disclosure | 0 | | | 0 | |
Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
FHLB Common Stock, Fair Value | 56 | | | 52 | |
Cash and cash equivalents | 1,357 | | | | |
Equity securities | 1,118 | | | | |
Derivative investments | 305 | | | | |
Total financial assets at fair value | 25,258 | | | | |
FHLB common stock | 485 | | | 483 | |
Commercial mortgage loans | 12 | | | 187 | |
Investments, Affiliated Bank Loan, Fair Value Disclosure | 40 | | | 39 | |
Funds withheld for reinsurance receivables, at fair value | 5 | | | 8 | |
Total assets carried on balance sheet at amounts other than fair value | 797 | | | 780 | |
Liabilities Related to Investment Contracts, Fair Value Disclosure | 18,355 | | | 18,358 | |
Total liabilities carried on balance sheet at amounts other than fair value | 18,898 | | | 18,878 | |
Debt Instrument, Fair Value Disclosure | 543 | | | 520 | |
Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
FHLB Common Stock, Fair Value | 56 | | | 52 | |
Cash and cash equivalents | 1,357 | | | | |
Equity securities | 1,118 | | | | |
Derivative investments | 305 | | | | |
Total financial assets at fair value | 25,258 | | | | |
FHLB common stock | 479 | | | 482 | |
Commercial mortgage loans | 23 | | | 185 | |
Investments, Affiliated Bank Loan, Fair Value Disclosure | 40 | | | 39 | |
Funds withheld for reinsurance receivables, at fair value | 5 | | | 8 | |
Total assets carried on balance sheet at amounts other than fair value | 798 | | | 788 | |
Liabilities Related to Investment Contracts, Fair Value Disclosure | 21,161 | | | 20,911 | |
Total liabilities carried on balance sheet at amounts other than fair value | 21,702 | | | 21,452 | |
Debt Instrument, Fair Value Disclosure | 541 | | | 541 | |
Fixed indexed annuities | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Fixed indexed annuities | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Fixed indexed annuities | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 3,544 | | | | |
Fixed indexed annuities | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 3,544 | | | | |
Fixed indexed annuities | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 3,544 | | | | |
Future Contracts [Member] | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Future Contracts [Member] | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Future Contracts [Member] | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 2,720 | | | | |
Future Contracts [Member] | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 2,720 | | | | |
Future Contracts [Member] | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 2,720 | | | | |
Future Policy Benefits [Member] | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Future Policy Benefits [Member] | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Future Policy Benefits [Member] | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 797 | | | | |
Future Policy Benefits [Member] | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 797 | | | | |
Future Policy Benefits [Member] | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 797 | | | | |
Preferred shares reimbursement feature embedded derivative | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Preferred shares reimbursement feature embedded derivative | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Preferred shares reimbursement feature embedded derivative | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 27 | | | | |
Preferred shares reimbursement feature embedded derivative | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings | (2) | $ 1 | | | |
Available-for-sale Securities | 27 | 24 | | 29 | $ 23 |
Preferred shares reimbursement feature embedded derivative | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 27 | | | | |
Asset-backed securities | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 4,974 | | | 4,832 | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 0 | | | | |
Asset-backed securities | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Asset-backed securities | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 4,466 | | | | |
Asset-backed securities | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 508 | | | | |
Asset-backed securities | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 4,974 | | | | |
Asset-backed securities | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 4,974 | | | | |
Commercial mortgage-backed securities | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 2,647 | | | 2,537 | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 0 | | | | |
Commercial mortgage-backed securities | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Commercial mortgage-backed securities | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 2,579 | | | | |
Commercial mortgage-backed securities | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 68 | | | | |
Commercial mortgage-backed securities | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 2,647 | | | | |
Commercial mortgage-backed securities | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 2,647 | | | | |
Corporates | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 10,590 | | | 10,381 | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | (1) | | | | |
Corporates | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Corporates | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 9,381 | | | | |
Corporates | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 1,209 | | | | |
Corporates | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 10,590 | | | | |
Corporates | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 10,590 | | | | |
Hybrids | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 961 | | | 901 | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 0 | | | | |
Hybrids | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 277 | | | | |
Hybrids | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 674 | | | | |
Hybrids | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 10 | | | | |
Hybrids | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 961 | | | | |
Hybrids | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 961 | | | | |
Municipals | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 0 | | | | |
Municipals | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Municipals | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 1,179 | | | | |
Municipals | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 38 | | | | |
Municipals | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 1,217 | | | | |
Municipals | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 1,217 | | | | |
Residential mortgage-backed securities | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 1,022 | | | 1,031 | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 0 | | | | |
Residential mortgage-backed securities | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Residential mortgage-backed securities | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 403 | | | | |
Residential mortgage-backed securities | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 619 | | | | |
Residential mortgage-backed securities | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 1,022 | | | | |
Residential mortgage-backed securities | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 1,022 | | | | |
U.S. Government | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 56 | | | 119 | |
U.S. Government | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 51 | | | | |
U.S. Government | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 5 | | | | |
U.S. Government | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
U.S. Government | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 56 | | | | |
U.S. Government | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 56 | | | | |
Foreign Government Debt Securities [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 138 | | | 121 | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 0 | | | | |
Foreign Government Debt Securities [Member] | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Foreign Government Debt Securities [Member] | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 122 | | | | |
Foreign Government Debt Securities [Member] | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 16 | | | | |
Foreign Government Debt Securities [Member] | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 138 | | | | |
Foreign Government Debt Securities [Member] | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 138 | | | | |
Other invested assets | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Other invested assets | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 0 | | | | |
Other invested assets | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 41 | | | | |
Other invested assets | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 41 | | | | |
Other invested assets | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 41 | | | | |
Reinsurance Receivables, Funds Withheld [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | 0 | 0 | | | |
Reinsurance Receivables, Funds Withheld [Member] | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 161 | | | 169 | |
Reinsurance Receivables, Funds Withheld [Member] | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 664 | | | 576 | |
Reinsurance Receivables, Funds Withheld [Member] | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 7 | | | 4 | |
Reinsurance Receivables, Funds Withheld [Member] | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | 832 | | | 749 | |
Reinsurance Receivables, Funds Withheld [Member] | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | $ 832 | | | 749 | |
Predecessor | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings | | (117) | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | | 1 | | | |
Predecessor | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Cash and cash equivalents | | | | 571 | |
Equity securities | | | | 454 | |
Derivative investments | | | | 0 | |
Other invested assets | | | | 0 | |
Total financial assets at fair value | | | | 1,573 | |
Commercial mortgage loans | | | | 0 | |
Financial Liabilities Fair Value Disclosure | | | | 0 | |
Predecessor | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Cash and cash equivalents | | | | 0 | |
Equity securities | | | | 874 | |
Derivative investments | | | | 97 | |
Other invested assets | | | | 0 | |
Total financial assets at fair value | | | | 19,858 | |
Commercial mortgage loans | | | | 0 | |
Financial Liabilities Fair Value Disclosure | | | | 0 | |
Predecessor | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Cash and cash equivalents | | | | 0 | |
Equity securities | | | | 4 | |
Derivative investments | | | | 0 | |
Other invested assets | | | | 39 | |
Total financial assets at fair value | | | | 2,466 | |
Commercial mortgage loans | | | | 11 | |
Financial Liabilities Fair Value Disclosure | | | | 3,230 | |
Predecessor | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Cash and cash equivalents | | | | 571 | |
Equity securities | | | | 1,332 | |
Derivative investments | | | | 97 | |
Other invested assets | | | | 39 | |
Total financial assets at fair value | | | | 23,897 | |
Commercial mortgage loans | | | | 11 | |
Financial Liabilities Fair Value Disclosure | | | | 3,230 | |
Predecessor | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Cash and cash equivalents | | | | 571 | |
Equity securities | | | | 1,332 | |
Derivative investments | | | | 97 | |
Other invested assets | | | | 39 | |
Total financial assets at fair value | | | | 23,897 | |
Commercial mortgage loans | | | | 22 | |
Financial Liabilities Fair Value Disclosure | | | | 3,230 | |
Predecessor | Fixed indexed annuities | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Derivative Liability | | | | 0 | |
Predecessor | Fixed indexed annuities | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Derivative Liability | | | | 0 | |
Predecessor | Fixed indexed annuities | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Derivative Liability | | | | 2,476 | |
Predecessor | Fixed indexed annuities | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Derivative Liability | | | | 2,476 | |
Predecessor | Fixed indexed annuities | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Derivative Liability | | | | 2,476 | |
Predecessor | Call options | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Call options | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Call options | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 725 | |
Predecessor | Call options | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 725 | |
Predecessor | Call options | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 725 | |
Predecessor | Preferred shares reimbursement feature embedded derivative | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Preferred shares reimbursement feature embedded derivative | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Preferred shares reimbursement feature embedded derivative | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 29 | |
Predecessor | Preferred shares reimbursement feature embedded derivative | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 29 | |
Predecessor | Preferred shares reimbursement feature embedded derivative | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 29 | |
Predecessor | Asset-backed securities | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | | 0 | | | |
Predecessor | Asset-backed securities | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Asset-backed securities | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 4,388 | |
Predecessor | Asset-backed securities | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 444 | |
Predecessor | Asset-backed securities | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 4,832 | |
Predecessor | Asset-backed securities | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 4,832 | |
Predecessor | Commercial mortgage-backed securities | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | | 0 | | | |
Predecessor | Commercial mortgage-backed securities | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Commercial mortgage-backed securities | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 2,470 | |
Predecessor | Commercial mortgage-backed securities | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 67 | |
Predecessor | Commercial mortgage-backed securities | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 2,537 | |
Predecessor | Commercial mortgage-backed securities | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 2,537 | |
Predecessor | Corporates | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | | 0 | | | |
Predecessor | Corporates | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Corporates | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 9,150 | |
Predecessor | Corporates | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 1,231 | |
Predecessor | Corporates | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 10,381 | |
Predecessor | Corporates | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 10,381 | |
Predecessor | Hybrids | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | | 0 | | | |
Predecessor | Hybrids | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 265 | |
Predecessor | Hybrids | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 626 | |
Predecessor | Hybrids | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 10 | |
Predecessor | Hybrids | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 901 | |
Predecessor | Hybrids | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 901 | |
Predecessor | Municipals | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | | 0 | | | |
Predecessor | Municipals | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Municipals | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 1,150 | |
Predecessor | Municipals | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 37 | |
Predecessor | Municipals | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 1,187 | |
Predecessor | Municipals | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 1,187 | |
Predecessor | Residential mortgage-backed securities | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | | $ 0 | | | |
Predecessor | Residential mortgage-backed securities | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Residential mortgage-backed securities | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 417 | |
Predecessor | Residential mortgage-backed securities | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 614 | |
Predecessor | Residential mortgage-backed securities | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 1,031 | |
Predecessor | Residential mortgage-backed securities | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 1,031 | |
Predecessor | U.S. Government | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 114 | |
Predecessor | U.S. Government | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 5 | |
Predecessor | U.S. Government | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | U.S. Government | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 119 | |
Predecessor | U.S. Government | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 119 | |
Predecessor | Foreign Government Debt Securities [Member] | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings | | | $ 0 | | |
Predecessor | Foreign Government Debt Securities [Member] | Level 1 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 0 | |
Predecessor | Foreign Government Debt Securities [Member] | Level 2 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 105 | |
Predecessor | Foreign Government Debt Securities [Member] | Level 3 | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 16 | |
Predecessor | Foreign Government Debt Securities [Member] | Fair Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | 121 | |
Predecessor | Foreign Government Debt Securities [Member] | Carrying Value | | | | | |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | | | | | |
Available-for-sale Securities | | | | $ 121 | |