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Long-term Debt - Table 1 (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Schedule of Outstanding Long-term Debt
Capital lease obligations	$ 272.3	$ 279.3
Total debt and capital lease obligations	2,622.4	3,016.4
Less: Current portion	(31.1)	(37.1)
Long-term debt, net of current portion	2,591.3	2,979.3
Term Loan Facilities [Member] | Term Loan Facilities [Member]
Schedule of Outstanding Long-term Debt
Total debt	$ 298.3	421.2
Senior Notes [Member] | 5.125% Senior Notes Due 2023 [Member]
Schedule of Outstanding Long-term Debt
Debt instrument interest rate (percent)	5.125%
Total debt	$ 295.7	295.3
Senior Notes [Member] | 5.75% Senior Notes Due 2024 [Member]
Schedule of Outstanding Long-term Debt
Debt instrument interest rate (percent)	5.75%
Total debt	$ 1,193.7	1,193.2
Senior Notes [Member] | 5.75% Senior Notes Due 2025 [Member]
Schedule of Outstanding Long-term Debt
Debt instrument interest rate (percent)	5.75%
Total debt	$ 344.3	343.9
Senior Subordinated Notes [Member] | 2.00% Convertible Senior Subordinated Notes due 2043 [Member]
Schedule of Outstanding Long-term Debt
Debt instrument interest rate (percent)	2.00%
Total debt	$ 0.0	275.7
Other Notes Payable [Member]
Schedule of Outstanding Long-term Debt
Total debt	80.1	55.8
Revolving Credit Facility [Member]
Schedule of Outstanding Long-term Debt
Total debt	$ 138.0	$ 152.0

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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