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Accumulated Other Comprehensive Income | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Accumulated Other Comprehensive Income | Accumulated Other Comprehensive Income The changes in the components of Accumulated Other Comprehensive Income (“AOCI”), net of tax, are as follows (in millions):
| Unrealized Translation |  | Cash Flow Hedges |  | Defined Benefit Pension Plans |  | Accumulated Other Comprehensive Income
Balance, December 31, 2014 | $ | (18.3 | ) |  | $ | (0.5 | ) |  | $ | (0.3 | ) |  | $ | (19.1 | )
Other comprehensive loss | (22.1 | ) |  | (0.7 | ) |  | (1.3 | ) |  | (24.1 | )
Balance, December 31, 2015 | (40.4 | ) |  | (1.2 | ) |  | (1.6 | ) |  | (43.2 | )
Other comprehensive (loss) income | (8.3 | ) |  | 0.8 |  |  | 0.6 |  |  | (6.9 | )
Balance, December 31, 2016 | (48.7 | ) |  | (0.4 | ) |  | (1.0 | ) |  | (50.1 | )
Other comprehensive (loss) income | 17.1 |  |  | 1.2 |  |  | 0.5 |  |  | 18.8 |
Balance, December 31, 2017 | $ | (31.6 | ) |  | $ | 0.8 |  |  | $ | (0.5 | ) |  | $ | (31.3 | )
The net changes in the components of AOCI, including the tax effect, are as follows (in millions):
| Year Ended December 31,
| 2017 |  | 2016 |  | 2015
Unrealized translation | $ | 17.1 |  |  | $ | (8.3 | ) |  | $ | (22.1 | )
Defined benefit pension plans | 0.6 |  |  | 0.7 |  |  | (1.9 | )
Tax effect | (0.1 | ) |  | (0.1 | ) |  | 0.6 |
Defined benefit pension plans, net of tax | 0.5 |  |  | 0.6 |  |  | (1.3 | )
Cash flow hedges | 1.5 |  |  | 1.0 |  |  | (1.0 | )
Tax effect | (0.3 | ) |  | (0.2 | ) |  | 0.3 |
Cash flow hedges, net of tax | 1.2 |  |  | 0.8 |  |  | (0.7 | )
Change in AOCI | $ | 18.8 |  |  | $ | (6.9 | ) |  | $ | (24.1 | )

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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- References No definition available. + Details
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