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Accumulated Other Comprehensive Loss (Tables)
12 Months Ended
Dec. 31, 2017
Accumulated Other Comprehensive Income [Abstract]  
Schedule of Accumulated Other Comprehensive Loss The following table presents the changes in the components of accumulated other comprehensive loss.
(in millions)
 
Cumulative
Translation
Adjustments
 
Net
Actuarial
Gain
(Loss)
 
Accumulated
Other
Comprehensive Loss
As of December 31, 2014
 
$
(79.9
)
 
$
(10.2
)
 
$
(90.1
)
Other comprehensive income (loss) before reclassifications
 
(32.3
)
 
1.0

 
(31.3
)
Amortization of actuarial losses reclassified to net loss(a)
 

 
0.5

 
0.5

Total other comprehensive income (loss), net of tax
 
(32.3
)
 
1.5

 
(30.8
)
As of December 31, 2015
 
(112.2
)
 
(8.7
)
 
(120.9
)
Other comprehensive income (loss) before reclassifications(b)
 
102.3

 
(0.3
)
 
102.0

Amortization of actuarial losses reclassified to net loss(a)
 

 
0.4

 
0.4

Total other comprehensive income, net of tax
 
102.3

 
0.1

 
102.4

As of December 31, 2016
 
(9.9
)
 
(8.6
)
 
(18.5
)
Other comprehensive income (loss) before reclassifications
 
11.8

 
(1.4
)
 
10.4

Amortization of actuarial losses reclassified to net loss(a)
 

 
0.4

 
0.4

Total other comprehensive income (loss), net of tax
 
11.8

 
(1.0
)
 
10.8

As of December 31, 2017
 
$
1.9

 
$
(9.6
)
 
$
(7.7
)

(a)
See Note 13. Retirement Benefits to the Consolidated Financial Statements for additional details of items reclassified from accumulated other comprehensive loss to net income (loss).
(b)
On April 1, 2016, in connection with the Disposition, we recognized $99.9 million in unrealized foreign currency translation losses.