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Accumulated Other Comprehensive Loss (Tables)
 3 Months Ended
Mar. 31, 2017
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Schedule of changes in Accumulated other comprehensive income (loss) by component
The changes in accumulated other comprehensive loss by component for the three months ended March 31, were as follows:
(in millions)
 
Accrued post-retirement benefit liability (1)
 
Foreign currency translation
 
Other
 
Total
Balance at January 1, 2017
 
$
(26.4
)
 
$
(96.7
)
 
$
0.9

 
$
(122.2
)
Other comprehensive income before reclassifications
 
—

 
11.4

 
0.1

 
11.5

Amounts reclassified from accumulated other comprehensive loss
 
0.6

 
—

 
(0.2
)
 
0.4

Income tax expense
 
(0.2
)
 
—

 
—

 
(0.2
)
Other comprehensive income (loss)
 
0.4

 
11.4

 
(0.1
)
 
11.7

Balance at March 31, 2017
 
$
(26.0
)
 
$
(85.3
)
 
$
0.8

 
$
(110.5
)
 
 
 
 
 
 
 
 
 
Balance at January 1, 2016
 
$
(27.4
)
 
$
(60.0
)
 
$
0.3

 
$
(87.1
)
Other comprehensive income before reclassifications
 
—

 
10.2

 
—

 
10.2

Amounts reclassified from accumulated other comprehensive loss
 
0.6

 
—

 
(0.3
)
 
0.3

Income tax (expense) benefit
 
(0.2
)
 
—

 
0.1

 
(0.1
)
Other comprehensive income (loss)
 
0.4

 
10.2

 
(0.2
)
 
10.4

Balance at March 31, 2016
 
$
(27.0
)
 
$
(49.8
)
 
$
0.1

 
$
(76.7
)
(1) Current period amounts for the accrued post-retirement benefit liability are related to the amortization of unrecognized actuarial gains and losses, which is included in net periodic benefit cost for pension and other post-retirement welfare plans. See Note 13 for further information.