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Stockholders' Equity - Other Comprehensive Loss (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Other Comprehensive Income (Loss) |  |
Other comprehensive income (loss), pre-tax | $ (4,519.6) | $ (1,799.1)
Other comprehensive income (loss), tax | 989.5 | 369.6
Other comprehensive income (loss) | (3,530.1) | (1,429.5)
Net unrealized gains (losses) on available-for-sale securities including NCI |  |
Other Comprehensive Income (Loss) |  |
Other comprehensive income (loss) before reclassifications, pre-tax | (5,542.9) | (3,276.7)
Adjustments for assumed changes in amortization patterns, pre-tax | 344.9 | 144.6
Adjustments for assumed changes in policyholder liabilities, pre-tax | 575.6 | 1,415.3
Other comprehensive income (loss), pre-tax | (4,663.0) | (1,744.2)
Other comprehensive income (loss) before reclassifications, tax | 1,175.1 | 700.5
Reclassification from accumulated other comprehensive income, tax | 5.2 | 5.7
Adjustments for assumed changes in amortization patterns, tax | (72.4) | (30.4)
Adjustments for assumed changes in policyholder liabilities, tax | (118.8) | (305.0)
Other comprehensive income (loss), tax | 989.1 | 370.8
Other comprehensive income (loss) before reclassifications, after-tax | (4,367.8) | (2,576.2)
Reclassification from accumulated other comprehensive income, after-tax | (35.4) | (21.7)
Adjustments for assumed changes in amortization patterns, after-tax | 272.5 | 114.2
Adjustments for assumed changes in policyholder liabilities, after-tax | 456.8 | 1,110.3
Other comprehensive income (loss) | (3,673.9) | (1,373.4)
Net unrealized gains (losses) on available-for-sale securities including NCI | Net realized capital gains (losses) |  |
Other Comprehensive Income (Loss) |  |
Reclassification from accumulated other comprehensive income, pre-tax | (40.6) | (27.4)
Net unrealized gains (losses) on derivative instruments including NCI |  |
Other Comprehensive Income (Loss) |  |
Other comprehensive income (loss) before reclassifications, pre-tax | (21.0) | 0.7
Reclassification from accumulated other comprehensive income, pre-tax | (6.8) | (4.4)
Adjustments for assumed changes in amortization patterns, pre-tax | 2.3 |
Adjustments for assumed changes in policyholder liabilities, pre-tax | 5.0 | 1.0
Other comprehensive income (loss), pre-tax | (20.5) | (2.7)
Other comprehensive income (loss) before reclassifications, tax | 4.4 | (0.1)
Reclassification from accumulated other comprehensive income, tax | 1.4 | 0.9
Adjustments for assumed changes in amortization patterns, tax | (0.5) |
Adjustments for assumed changes in policyholder liabilities, tax | (1.1) | (0.3)
Other comprehensive income (loss), tax | 4.2 | 0.5
Other comprehensive income (loss) before reclassifications, after-tax | (16.6) | 0.6
Reclassification from accumulated other comprehensive income, after-tax | (5.4) | (3.5)
Adjustments for assumed changes in amortization patterns, after-tax | 1.8 |
Adjustments for assumed changes in policyholder liabilities, after-tax | 3.9 | 0.7
Other comprehensive income (loss) | (16.3) | (2.2)
Foreign currency translation adjustment including NCI |  |
Other Comprehensive Income (Loss) |  |
Other comprehensive income (loss), pre-tax | 154.9 | (56.1)
Other comprehensive income (loss), tax | (1.5) | (0.1)
Other comprehensive income (loss) | 153.4 | (56.2)
Unrecognized postretirement benefit obligation including NCI |  |
Other Comprehensive Income (Loss) |  |
Other comprehensive income (loss) before reclassifications, pre-tax |  | (9.1)
Other comprehensive income (loss), pre-tax | 9.0 | 3.9
Other comprehensive income (loss) before reclassifications, tax |  | 1.9
Reclassification from accumulated other comprehensive income, tax | (2.3) | (3.5)
Other comprehensive income (loss), tax | (2.3) | (1.6)
Other comprehensive income (loss) before reclassifications, after-tax |  | (7.2)
Reclassification from accumulated other comprehensive income, after-tax | 6.7 | 9.5
Other comprehensive income (loss) | 6.7 | 2.3
Unrecognized postretirement benefit obligation including NCI | Operating expense |  |
Other Comprehensive Income (Loss) |  |
Reclassification from accumulated other comprehensive income, pre-tax | $ 9.0 | $ 13.0

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