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Accumulated Other Comprehensive Income (Tables) | 3 Months Ended
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Mar. 31, 2021
Equity [Abstract] |
Schedule of changes in the components of accumulated other comprehensive income | The changes in the components of AOCI, net of tax, are as follows (in millions):
| Unrealized Translation |  | Cash Flow Hedges |  | Defined Benefit Pension Plans |  | Accumulated Other Comprehensive Loss
Balance, December 31, 2020 | $ | (27.7) |  |  | $ | — |  |  | $ | (0.4) |  |  | $ | (28.1) |
Other comprehensive loss | (4.2) |  |  | — |  |  | — |  |  | (4.2) |
Balance, March 31, 2021 | $ | (31.9) |  |  | $ | — |  |  | $ | (0.4) |  |  | $ | (32.3) |
The changes in the components of AOCI, including the tax effect, are as follows (in millions):
| Three Months Ended March 31,
| 2021 |  | 2020
Unrealized translation | $ | (4.2) |  |  | $ | (15.0) |
Defined benefit pension plans | — |  |  | 0.3 |
Tax effect | — |  |  | (0.1) |
Defined benefit pension plans, net of tax | — |  |  | 0.2 |
Cash flow hedges | — |  |  | (0.1) |
Tax effect | — |  |  | — |
Cash flow hedges, net of tax | — |  |  | (0.1) |
Change in AOCI | $ | (4.2) |  |  | $ | (14.9) |

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450520&loc=d3e32583-110901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=124509347&loc=SL7669686-108580 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 830 -SubTopic 30 -Section 45 -Paragraph 20 -URI http://asc.fasb.org/extlink&oid=118261656&loc=d3e32211-110900 + Details
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