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Income Taxes - Components of the deferred tax assets and liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Deferred tax assets |  |
Unearned premium reserves | $ 659 | $ 642
Pension | 161 | 197
Accrued compensation | 139 | 147
Discount on loss reserves | 79 | 78
Other postretirement benefits | 36 | 49
Net operating loss carryover | 23 | 26
Other assets | 68 | 54
Total deferred tax assets | 1,165 | 1,193
Deferred tax liabilities |  |
DAC | (858) | (847)
Unrealized net capital gains | (856) | (507)
Investments | (394) | (567)
Life and annuity reserves | (216) | (222)
Intangible assets | (87) | (98)
Other liabilities | (109) | (106)
Total deferred tax liabilities | (2,520) | (2,347)
Net deferred tax liability | $ (1,355) | $ (1,154)

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