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Interest Expense (Details) (Narratives) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Disclosure [Abstract]
Interest Expense	$ (290.6)	$ (428.3)	$ (282.7)
Interest Costs Capitalized	1.3	$ 20.9	$ 62.6
Contractual Interest Expense on Prepetition Liabilities Not Recognized in Statement of Operations	$ 140.7

X

- Definition

The amount of contractual interest expense on prepetition liabilities not included in the statement of operations.

+ References

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No definition available.

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- Definition

Amount of interest capitalized during the period.

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- Definition

Amount of the cost of borrowed funds accounted for as interest expense.

+ References

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