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Accumulated Other Comprehensive Income (Loss) by Component (Notes)
 12 Months Ended
Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]  
Accumulated Other Comprehensive Income (Loss) by Component
15.
ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
The table below presents the changes in Accumulated other comprehensive income (loss) by component.
($ in millions)
Pension and postretirement benefit
Cumulative foreign currency translation adjustment
Total
Balance as of December 31, 2016
$
(68.7
)
(482.6
)
(551.3
)
Other comprehensive loss before reclassification
4.4

202.0

206.4

Amounts reclassified from AOCI after tax expense of $0.9, $- and $0.9
3.8

—

3.8

Other comprehensive loss after tax benefit of $0.3, $- and $0.3
8.2

202.0

210.2

Balance as of December 31, 2017
(60.5
)
(280.6
)
(341.1
)
Other comprehensive income before reclassification
0.7

(118.2
)
(117.5
)
Amounts reclassified from AOCI after tax expense of $0.6, $- and $0.6
2.4

—

2.4

Other comprehensive income after tax expense of $0.3, $- and $0.3
3.1

(118.2
)
(115.1
)
Balance as of December 31, 2018
$
(57.4
)
(398.8
)
(456.2
)

For pension and postretirement benefits, we report amounts reclassified from Accumulated other comprehensive income (loss) in Other income within the Consolidated Statements of Comprehensive Income.