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Long-term Debt - Scheduled Principal Payments Due on Long-term Debt (Details) $ in Millions	Dec. 31, 2017 USD ($)
Face Amount [Member]
Long-term Debt by Maturity
2018	$ 32.3
2019	32.3
2020	25.2
2021	25.8
2022	356.1
Thereafter	2,123.4
Total	2,595.1
Net Amount [Member]
Long-term Debt by Maturity
2018	32.3
2019	32.2
2020	25.2
2021	25.8
2022	354.5
Thereafter	2,107.7
Total	$ 2,577.7

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- Definition

Amount of long-term debt and capital lease obligations including current maturities.

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No definition available.

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- Definition

Principal amount of long-term debt and capital lease obligation maturing after the fifth 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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No definition available.

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- Definition

Principal amount of long-term debt and capital lease obligation maturing in the fifth 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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No definition available.

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- Definition

Principal amount of long-term debt and capital lease obligation 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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No definition available.

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- Definition

Principal amount of long-term debt and capital lease obligation 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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No definition available.

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- Definition

Principal amount of long-term debt and capital lease obligation maturing in the second 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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No definition available.

+ Details

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- Definition

Principal amount of long-term debt and capital lease obligation 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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No definition available.

+ Details

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