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Pension and Other Postretirement Benefits - Schedule of Amounts in Other Comprehensive Loss that are Expected to be Recognized as Components of Net Periodic Benefit Cost (Details) $ in Millions | Jun. 30, 2018 USD ($)
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Amounts in other comprehensive loss that are expected to recognized as components of net periodic benefit cost in the next fiscal year |
Amortization of prior service cost (benefit) | $ (3.1)
Amortization of net actuarial loss | 12.1
Amortization of accumulated other comprehensive loss (gain) | 9.0
Pension Benefits |
Amounts in other comprehensive loss that are expected to recognized as components of net periodic benefit cost in the next fiscal year |
Amortization of prior service cost (benefit) | 2.1
Amortization of net actuarial loss | 10.4
Amortization of accumulated other comprehensive loss (gain) | 12.5
Other Benefits |
Amounts in other comprehensive loss that are expected to recognized as components of net periodic benefit cost in the next fiscal year |
Amortization of prior service cost (benefit) | (5.2)
Amortization of net actuarial loss | 1.7
Amortization of accumulated other comprehensive loss (gain) | $ (3.5)

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