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Accumulated Other Comprehensive Loss (AOCL) | 12 Months Ended
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Dec. 31, 2020
Additional financial information disclosures [Abstract] |
Accumulated Other Comprehensive Loss (AOCL) | Accumulated Other Comprehensive Loss ("AOCL")
Components of AOCL | 2020 |  | 2019
Defined benefit plan liabilities | $ | (123.7) |  |  | $ | (115.9) |
Unrealized gain (loss) on financial instruments | 2.1 |  |  | 2.3 |
Other comprehensive loss before income tax effect | (121.6) |  |  | (113.6) |
Income tax effect(1) | 2.8 |  |  | 3.8 |
Accumulated other comprehensive loss | $ | (118.8) |  |  | $ | (109.8) |
(1)The allocation of the income tax effect to the components of other comprehensive loss is as follows:
| 2020 |  | 2019
Defined benefit plan liabilities | $ | 3.2 |  |  | $ | 4.3 |
Unrealized loss on financial instruments | (0.4) |  |  | (0.4) |
The following table summarizes the changes in the accumulated balances for each component of AOCL:
| Defined benefit plan and other postretirement liabilities |  | Unrealized gain (loss) on financial instruments |  | Total, net of tax
Balance, December 31, 2017 | $ | (93.8) |  |  | $ | 2.1 |  |  | $ | (91.7) |
Other comprehensive (loss) before reclassifications | (7.3) |  |  | — |  |  | (7.3) |
Net amount reclassified to net income (loss) | 0.4 |  |  | (0.1) |  |  | 0.3 |
Balance, December 31, 2018 | (100.7) |  |  | 2.0 |  |  | (98.7) |
Impact of ASU 2018-02* | (1.3) |  |  | — |  |  | (1.3) |
Other comprehensive (loss) before reclassifications | (12.7) |  |  | — |  |  | (12.7) |
Net amount reclassified to net income (loss) | 3.0 |  |  | (0.1) |  |  | 2.9 |
Balance, December 31, 2019 | (111.7) |  |  | 1.9 |  |  | (109.8) |
Other comprehensive income before reclassifications | (13.5) |  |  | — |  |  | (13.5) |
Net amount reclassified to net income (loss) | 4.6 |  |  | (0.1) |  | 4.5 |
Balance, December 31, 2020 | $ | (120.6) |  |  | $ | 1.8 |  |  | $ | (118.8) |
*ASU 2018-02. See Note 14. Income Taxes for further information regarding our adoption of ASU 2018-02. Reclassifications out of AOCL were included in the consolidated statements of operations as follows:
AOCL Components |  | Location |  | 2020 |  | 2019 |  | 2018
Defined benefit plan and other postretirement liabilities |  | Cost of goods sold |  | $ | (4.7) |  |  | $ | (3.2) |  |  | $ | 2.8 |
|  | Selling, general and administrative expenses |  | (2.0) |  |  | (4.4) |  |  | (1.9) |
|  | Other operating expense, net |  | (1.1) |  |  | (1.0) |  |  | 1.2 |
|  | Income tax expense |  | (1.1) |  |  | (1.1) |  |  | (1.6) |
|  | Net of tax |  | $ | (8.9) |  |  | $ | (9.7) |  |  | $ | 0.5 |
Gain (loss) on financial instruments |  | Cost of goods sold |  | $ | (0.2) |  |  | $ | (0.2) |  |  | $ | (0.2) |
|  | Income tax benefit |  | 0.1 |  |  | 0.1 |  |  | 0.0 |
|  | Net of tax |  | $ | (0.1) |  |  | $ | (0.1) |  |  | $ | (0.2) |

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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 http://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 http://asc.fasb.org/extlink&oid=120395209&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 http://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 http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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