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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Amount, after accumulated amortization, of debt discount.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Supplemental Guarantor Condensed Financial Information (Parent Company Long-Term Financing Arrangements) (Details) - USD ($) $ in Millions	Dec. 31, 2017	Dec. 31, 2016	Dec. 15, 2009
Debt Instrument [Line Items]
Less current maturities	$ 46.9	$ 67.5
Long-term debt	1,038.8	871.1
Debt maturities 2018	46.9
Debt maturities 2019	0.9
Debt maturities 2020	0.8
Debt maturities 2021	0.4
Debt maturities 2022	854.6
North America
Debt Instrument [Line Items]
Debt discount	(253.1)	(255.6)
North America \| 5.75% Senior Notes due 2022
Debt Instrument [Line Items]
Face Value	600.0	600.0
North America \| Subordinated Convertible Notes Due 2029
Debt Instrument [Line Items]
Face Value	429.5	429.5	$ 162.9
Debt discount	(253.1)	(255.6)	$ (266.6)
North America \| Other Debt
Debt Instrument [Line Items]
Face Value	9.0	9.0
Parent
Debt Instrument [Line Items]
Debt maturities 2018	0.0
Debt maturities 2019	0.0
Debt maturities 2020	0.0
Debt maturities 2021	0.0
Debt maturities 2022	600.0
Parent \| North America
Debt Instrument [Line Items]
Face Value	776.3	772.3
Debt discount		(255.6)
Debt issuance costs	(9.1)	(10.6)
Less current maturities	0.0	0.0
Long-term debt	776.3	772.3
Parent \| North America \| 5.75% Senior Notes due 2022
Debt Instrument [Line Items]
Face Value	600.0	600.0
Parent \| North America \| Subordinated Convertible Notes Due 2029
Debt Instrument [Line Items]
Face Value	429.5	429.5
Parent \| North America \| Other Debt
Debt Instrument [Line Items]
Face Value	$ 9.0	$ 9.0