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Fresh Start Accounting - Schedule of Reorganization Value (Details) - USD ($) $ in Millions	Dec. 31, 2021	Apr. 30, 2021	Dec. 31, 2020
Reorganization, Chapter 11 [Line Items]
Enterprise Value		$ 1,860.0
Cash and cash equivalents	$ 608.7	607.6	$ 325.8
Non-Interest Bearing Liabilities, Current		346.0
Adjustments Not Contemplated In The Enterprise Value		(218.0)
TOTAL ASSETS	$ 2,609.2	$ 2,595.6	$ 12,873.2

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