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Accumulated Other Comprehensive (Loss) Income | 9 Months Ended
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Sep. 30, 2022
Equity [Abstract] |
Accumulated Other Comprehensive (Loss) Income | 7. Accumulated Other Comprehensive (Loss) Income The following table presents the changes in the accumulated balances for each component of AOCI (in millions of dollars):
|  | Quarter Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2022 |  |  | 2021 |  |  | 2022 |  |  | 2021 |
Defined Benefit Pension Plans and Salaried VEBA: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | (19.6 | ) |  | $ | (18.4 | ) |  | $ | (21.4 | ) |  | $ | (19.8 | )
Amortization of net actuarial loss 1 |  |  | — |  |  |  | 0.1 |  |  |  | — |  |  |  | 0.3 |
Amortization of prior service cost 1 |  |  | 1.2 |  |  |  | 0.9 |  |  |  | 3.7 |  |  |  | 2.6 |
Less: income tax expense 2 |  |  | (0.2 | ) |  |  | (0.2 | ) |  |  | (0.9 | ) |  |  | (0.7 | )
Other comprehensive income, net of tax |  |  | 1.0 |  |  |  | 0.8 |  |  |  | 2.8 |  |  |  | 2.2 |
Ending balance |  | $ | (18.6 | ) |  | $ | (17.6 | ) |  | $ | (18.6 | ) |  | $ | (17.6 | )
Cash Flow Hedges: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | (1.7 | ) |  | $ | 24.8 |  |  | $ | 17.7 |  |  | $ | 1.1 |
Unrealized (loss) gain on cash flow hedges |  |  | (9.8 | ) |  |  | 29.8 |  |  |  | (18.2 | ) |  |  | 72.1 |
Less: income tax benefit (expense) |  |  | 2.2 |  |  |  | (7.0 | ) |  |  | 4.2 |  |  |  | (17.0 | )
Net unrealized (loss) gain on cash flow hedges |  |  | (7.6 | ) |  |  | 22.8 |  |  |  | (14.0 | ) |  |  | 55.1 |
Reclassification of unrealized loss (gain) upon settlement of cash flow hedges |  |  | 8.1 |  |  |  | (16.7 | ) |  |  | (8.9 | ) |  |  | (28.1 | )
Less: income tax (expense) benefit 2 |  |  | (1.9 | ) |  |  | 3.9 |  |  |  | 2.1 |  |  |  | 6.7 |
Net loss (gain) reclassified from AOCI to Net income (loss) |  |  | 6.2 |  |  |  | (12.8 | ) |  |  | (6.8 | ) |  |  | (21.4 | )
Other comprehensive (loss) income, net of tax |  |  | (1.4 | ) |  |  | 10.0 |  |  |  | (20.8 | ) |  |  | 33.7 |
Ending balance 3 |  | $ | (3.1 | ) |  | $ | 34.8 |  |  | $ | (3.1 | ) |  | $ | 34.8 |
Foreign Currency Translation: |  |  |  |  |  |  |  |  |  |  |  |
Beginning balance |  | $ | — |  |  | $ | (0.1 | ) |  | $ | — |  |  | $ | — |
Other comprehensive income (loss), net of tax |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (0.1 | )
Ending balance |  | $ | — |  |  | $ | (0.1 | ) |  | $ | — |  |  | $ | (0.1 | )
Total AOCI ending balance |  | $ | (21.7 | ) |  | $ | 17.1 |  |  | $ | (21.7 | ) |  | $ | 17.1 |
1 Amounts amortized out of AOCI relating to Salaried VEBA adjustments were included within Other income (expense), net, as a component of Net periodic postretirement benefit cost relating to Salaried VEBA. 2 Income tax amounts reclassified out of AOCI were included as a component of Income tax (provision) benefit. 3 As of September 30, 2022, we estimate a net mark-to-market loss before tax of $7.6 million in AOCI will be reclassified into Net income (loss) upon settlement within the next 12 months.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI https://asc.fasb.org/topic&trid=2134417 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI https://asc.fasb.org/extlink&oid=126953954&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI https://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI https://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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