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Pension and Other Retiree Benefits - Other Changes Recognized in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Pension | U.S. |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Current year actuarial (gain) loss | $ 1.0 | $ 10.3 | $ (10.6)
Amortization of actuarial (loss) gain | (3.7) | (3.6) | (3.2)
Amortization of prior service cost |  | 1.5 | 0.4
Foreign exchange rate changes | 0.0 | 0.0 | 0.0
Total recognized in other comprehensive income (loss) | (4.7) | (15.4) | 7.0
Total recognized in net periodic benefit cost (income) and other comprehensive income (loss) | (7.0) | (16.7) | 6.7
Pension | International |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Current year actuarial (gain) loss | 23.9 | 30.5 | (36.5)
Amortization of actuarial (loss) gain | (5.1) | (7.1) | (5.3)
Amortization of prior service cost | 0.3 | 0.3 | 0.3
Foreign exchange rate changes | (21.5) | (4.1) | 8.5
Total recognized in other comprehensive income (loss) | (50.8) | (42.0) | 39.4
Total recognized in net periodic benefit cost (income) and other comprehensive income (loss) | (51.6) | (46.1) | 37.6
Post-retirement |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Current year actuarial (gain) loss | 0.6 | 0.5 | 0.0
Amortization of actuarial (loss) gain | 0.5 | 0.5 | 0.5
Amortization of prior service cost | 0.0 | 0.0 | 0.0
Foreign exchange rate changes | 0.2 | 0.0 | 0.0
Total recognized in other comprehensive income (loss) | 0.1 | 0.0 | 0.5
Total recognized in net periodic benefit cost (income) and other comprehensive income (loss) | $ (0.3) | $ (0.4) | $ 0.1

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- Definition Amount recognized in net periodic benefit cost (credit) and other comprehensive (income) loss. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4179-114921 + Details
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