Supplemental Guarantor Condensed Financial Information (Parent Company Long-Term Financing Arrangements) (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016	Dec. 15, 2009
Debt Instrument [Line Items]
Current portion of long-term debt	$ 59.6	$ 67.5
Long-term debt	992.9	871.1
Debt maturities Q1 2018	59.6
Debt maturities Q1 2019	217.2
Debt maturities Q1 2020	0.8
Debt maturities Q1 2021	0.7
Debt maturities Q1 2022	1.0
North America [Member]
Debt Instrument [Line Items]
Debt discount		(255.6)
Debt issuance costs	(10.3)	(10.6)
North America [Member] \| 5.75% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Face value	600.0	600.0
Debt issuance costs	(6.7)	(7.0)
North America [Member] \| Subordinated Convertible Notes Due 2029 [Member]
Debt Instrument [Line Items]
Face value	429.5	429.5	$ 429.5
Debt discount	(255.0)	(255.6)
Debt issuance costs	(3.6)	(3.6)
Parent [Member]
Debt Instrument [Line Items]
Current portion of long-term debt	0.0	0.0
Long-term debt	773.2	772.3
Parent [Member] \| North America [Member]
Debt Instrument [Line Items]
Face value	773.2	772.3
Debt discount	(255.0)	(255.6)
Debt issuance costs	(10.3)	(10.6)
Current portion of long-term debt	0.0	0.0
Long-term debt	773.2	772.3
Debt maturities Q1 2018	0.0
Debt maturities Q1 2019	0.0
Debt maturities Q1 2020	0.0
Debt maturities Q1 2021	0.0
Debt maturities Q1 2022	0.0
Parent [Member] \| North America [Member] \| 5.75% Senior Notes due 2022 [Member]
Debt Instrument [Line Items]
Face value	600.0	600.0
Parent [Member] \| North America [Member] \| Subordinated Convertible Notes Due 2029 [Member]
Debt Instrument [Line Items]
Face value	429.5	429.5
Parent [Member] \| North America [Member] \| Other Debt [Member]
Debt Instrument [Line Items]
Face value	$ 9.0	$ 9.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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