Annual report pursuant to Section 13 and 15(d)

Pension and Other Postretirement Benefit Programs - Expected Future Benefit Payments (Details)

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Pension and Other Postretirement Benefit Programs - Expected Future Benefit Payments (Details)
$ in Millions
Dec. 31, 2016
USD ($)
U.S. Defined Benefit Pension Plans  
U.S. Pension Benefits, Canadian Pension Benefits, and Retiree Health and Life Insurance Benefits, Gross  
2017 $ 15.2
2018 16.2
2019 17.3
2020 18.5
2021 19.5
2022-2026 110.3
Canadian Defined Benefit Pension Plans  
U.S. Pension Benefits, Canadian Pension Benefits, and Retiree Health and Life Insurance Benefits, Gross  
2017 1.5
2018 1.4
2019 1.3
2020 1.3
2021 1.3
2022-2026 5.8
Retiree Health and Life Insurance Plans  
U.S. Pension Benefits, Canadian Pension Benefits, and Retiree Health and Life Insurance Benefits, Gross  
2017 8.3
2018 7.9
2019 7.5
2020 7.0
2021 6.6
2022-2026 27.9
Retiree Health Medicare Subsidy Receipts  
Retiree Health Medicare Subsidy Receipts  
2017 (0.1)
2018 (0.1)
2019 (0.1)
2020 (0.1)
2021 (0.1)
2022-2026 $ (0.5)