The accumulated balances and reporting period activities for the three and six months ended March 31, 2024 and 2023 related to reclassifications out of accumulated other comprehensive loss are summarized as follows (in millions): | | | | | | | | | | | | | | | | | | Foreign | | | | | Accumulated | | | Pension | | Currency | | Gain/(Loss) on | | Other | | | Related | | Translation | | Derivative | | Comprehensive | | | Adjustments | | Adjustments | | Instruments | | Loss | Balances at December 31, 2023 | | $ | (235.0) | | $ | (679.7) | | $ | 24.9 | | $ | (889.8) | Other comprehensive income (loss) before reclassification | | | 1.9 | | | (27.0) | | | 8.3 | | | (16.8) | Amounts reclassified from accumulated other comprehensive loss | | | 0.1 | | | — | | | (3.5) | | | (3.4) | Balances at March 31, 2024 | | $ | (233.0) | | $ | (706.7) | | $ | 29.7 | | $ | (910.0) |
| | | | | | | | | | | | | | | | | | Foreign | | | | | Accumulated | | | Pension | | Currency | | Gain/(Loss) on | | Other | | | Related | | Translation | | Derivative | | Comprehensive | | | Adjustments | | Adjustments | | Instruments | | Loss | Balances at December 31, 2022 | | $ | (232.1) | | $ | (721.4) | | $ | 35.1 | | $ | (918.4) | Other comprehensive (loss) income before reclassification | | | (4.2) | | | 8.5 | | | (5.6) | | | (1.3) | Amounts reclassified from accumulated other comprehensive income (loss) | | | 0.5 | | | — | | | (1.9) | | | (1.4) | Balances at March 31, 2023 | | $ | (235.8) | | $ | (712.9) | | $ | 27.6 | | $ | (921.1) |
| | | | | | | | | | | | | | | | | | Foreign | | | | | Accumulated | | | Pension | | Currency | | Gain/(Loss) on | | Other | | | Related | | Translation | | Derivative | | Comprehensive | | | Adjustments | | Adjustments | | Instruments | | Loss | Balances at September 30, 2023 | | $ | (226.0) | | $ | (739.7) | | $ | 39.1 | | $ | (926.6) | Other comprehensive (loss) income before reclassification | | | (7.2) | | | 33.0 | | | (2.3) | | | 23.5 | Amounts reclassified from accumulated other comprehensive loss | | | 0.2 | | | — | | | (7.1) | | | (6.9) | Balances at March 31, 2024 | | $ | (233.0) | | $ | (706.7) | | $ | 29.7 | | $ | (910.0) |
| | | | | | | | | | | | | | | | | | Foreign | | | | | Accumulated | | | Pension | | Currency | | Gain/(Loss) on | | Other | | | Related | | Translation | | Derivative | | Comprehensive | | | Adjustments | | Adjustments | | Instruments | | Loss | Balances at September 30, 2022 | | $ | (217.3) | | $ | (799.3) | | $ | 36.9 | | $ | (979.7) | Other comprehensive (loss) income before reclassification | | | (19.6) | | | 86.4 | | | (7.4) | | | 59.4 | Amounts reclassified from accumulated other comprehensive income (loss) | | | 1.1 | | | — | | | (1.9) | | | (0.8) | Balances at March 31, 2023 | | $ | (235.8) | | $ | (712.9) | | $ | 27.6 | | $ | (921.1) |
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