Contractual interest rate for funds borrowed, under the debt agreement.

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Borrowings and Other Obligations (Schedule of Long-term Debt) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021	Aug. 04, 2020	Dec. 12, 2019
Debt Instrument [Line Items]
Finance Lease, Liability, Current	$ 14	$ 12
Current portion of long-term debt and term loan agreement	64	12
Finance Lease, Liability, Noncurrent	42	44
Long-term Debt and Lease Obligation	2,366	2,416
Senior Notes
Debt Instrument [Line Items]
Long-term Debt, Current Maturities	50	0
Senior Notes \| Senior Notes 8.625 Percent Due 2030
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	1,585	1,584
Debt Instrument, Interest Rate, Stated Percentage			8.625%
Senior Notes \| Exit Notes, 11.00 Percent Due 2024
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	250	300
Debt Instrument, Interest Rate, Stated Percentage				11.00%
Secured Debt
Debt Instrument [Line Items]
Long-term Debt, Excluding Current Maturities	$ 489	$ 488