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v3.23.2

Accumulated Other Comprehensive Income (Loss) (Other Comprehensive Income (Loss) Reclassification Adjustments) (Detail) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2022 | Mar. 31, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |  |
Pretax change before reclassifications |  | $ (96.8) |  | $ (387.4) |  | $ 47.8 | $ (882.2)
Reclassifications out of AOCI |  | 3.4 |  | 8.4 |  | 8.4 | 10.7
Tax effect |  | 25.3 |  | 88.8 |  | (11.3) | 213.1
Total other comprehensive (loss) income, net of tax |  | (68.1) | $ 113.0 | (290.2) | $ (368.2) | 44.9 | (658.4)
Unrealized Gains (Losses) on Debt Securities |  |  |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |  |
Pretax change before reclassifications |  | (108.3) |  | (362.3) |  | 33.7 | (859.4)
Reclassifications out of AOCI |  | 2.8 |  | 6.9 |  | 7.3 | 7.6
Tax effect |  | 25.8 |  | 88.6 |  | (10.6) | 213.4
Total other comprehensive (loss) income, net of tax |  | (79.7) |  | (266.8) |  | 30.4 | (638.4)
Foreign Currency Translation Adjustment |  |  |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |  |
Pretax change before reclassifications |  | 11.5 |  | (25.1) |  | 14.1 | (22.8)
Reclassifications out of AOCI |  | 0.0 |  | 0.0 |  | 0.0 | 0.0
Tax effect |  | (0.3) |  | 0.6 |  | (0.3) | 0.6
Total other comprehensive (loss) income, net of tax |  | 11.2 |  | (24.5) |  | 13.8 | (22.2)
Pension Benefit Adjustment |  |  |  |  |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |  |  |  |  |
Pretax change before reclassifications |  | 0.0 |  | 0.0 |  | 0.0 | 0.0
Reclassifications out of AOCI | [1] | 0.6 |  | 1.5 |  | 1.1 | 3.1
Tax effect |  | (0.2) |  | (0.4) |  | (0.4) | (0.9)
Total other comprehensive (loss) income, net of tax |  | $ 0.4 |  | $ 1.1 |  | $ 0.7 | $ 2.2
[1] | Amounts are components of net periodic cost. See Note 12 Employee Benefit Plans for additional details.

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