Debt Instrument Maturity Year

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- Definition

Debtor-in-Possession Financing, Line Of Credit Facility Maximum Borrowing Capacity

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- Definition

Debtor-in-Possession Financing, Line of Credit Facility, Remaining Borrowing Capacity

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- Definition

Defined Benefit Plan, Lease term of contributed property

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Finance Lease Liability Obligation

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- Definition

Gain (loss) on contribution of property to defined benefit

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- Definition

Line Of Credit Facility Maximum Borrowing Capacity Increase (Decrease)

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No definition available.

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- Definition

The maximum permitted leverage ratio under the Credit Agreement.

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No definition available.

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- Definition

Pension Building Contribution Aggregate Annual Rent

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No definition available.

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- Definition

Value of property contributed in noncash investing and financing activities.

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- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

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

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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- Definition

Amount of letters of credit outstanding under debtor-in-possession financing arrangement.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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- Definition

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

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- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Number of shares of stock issued as of the balance sheet date, including shares that had been issued and were previously outstanding but which are now held in the treasury.

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Long-Term Debt (Narrative) (Details) $ in Millions							4 Months Ended	8 Months Ended	12 Months Ended
Long-Term Debt (Narrative) (Details) $ in Millions	May 12, 2022 USD ($)	Oct. 13, 2021 USD ($)	Apr. 30, 2021 USD ($) shares	Apr. 14, 2021 USD ($)	Nov. 25, 2020 USD ($)	Oct. 08, 2020 USD ($)	Apr. 30, 2021 USD ($) shares	Dec. 31, 2021 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Oct. 12, 2021
Debt Instrument [Line Items]
Maximum lien leverage ratio covenant		3.00											2.75
Loss on early extinguishment of debt										$ (72.0)	$ (72.0)
Financing obligation for contributions of real property to pension plan											37.0	$ 37.0
Lease term of contributed property												20 years
Combined average aggregate annual rent												$ 5.0
Gain (loss) on contribution of property to defined benefit									$ 0.0
Interest expense							450.0				$ 1,456.0
Finance lease liability obligation									$ 54.0
DIP Term Loan Facility [Member]
Debt Instrument [Line Items]
DIP, Maximum line of credit					$ 750.0	$ 500.0
First Lien Notes Due 4/1/2027 [Member]
Debt Instrument [Line Items]
Interest rate									8.00%
Maturity date									Apr. 01, 2027
First Lien Notes Due 5/15/2030 [Member]
Debt Instrument [Line Items]
Aggregate principal amount	$ 1,200.0
Interest rate	8.75%
Second Lien Notes Due 4/1/2026 [Member]
Debt Instrument [Line Items]
Interest rate									8.50%
Maturity date									Apr. 01, 2026
New Incremental Commitment [Member]
Debt Instrument [Line Items]
DIP, Maximum line of credit				$ 225.0
Term Loan Facility [Member]
Debt Instrument [Line Items]
DIP, Maximum line of credit									$ 1,468.0
Maturity date									Oct. 08, 2027
Term Loan Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Interest rate margin									3.75%
Term Loan Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest rate margin									2.75%
Term Loan Facility [Member] \| LIBOR Floor Rate [Member]
Debt Instrument [Line Items]
Interest rate margin									0.75%
Revolving Facility [Member]
Debt Instrument [Line Items]
Letters of credit outstanding									$ 217.0
Available borrowing capacity									683.0
DIP, Maximum line of credit									$ 625.0
Maturity date									Apr. 30, 2025
Line of credit facility maximum borrowing capacity	$ 900.0								$ 900.0
Line of credit facility, borrowing capacity increase	$ 275.0
Revolving Facility [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Interest rate margin									3.50%
Revolving Facility [Member] \| Base Rate [Member]
Debt Instrument [Line Items]
Interest rate margin									2.50%
Revolving Facility [Member] \| LIBOR Floor Rate [Member]
Debt Instrument [Line Items]
Interest rate margin									0.00%
Senior Secured Notes [Member] \| Second Lien Notes Due 2030 [Member]
Debt Instrument [Line Items]
Aggregate principal amount		$ 1,000.0
Interest rate		6.00%
Maturity year		2030
Senior Secured Notes [Member] \| DIP-to-Exit First Lien Notes Due 10/15/2027 [Member]
Debt Instrument [Line Items]
Aggregate principal amount						$ 1,150.0
Interest rate						5.875%
Maturity date						Oct. 15, 2027
Senior Secured Notes [Member] \| DIP-to-Exit First Lien Notes Due 5/1/2028 [Member]
Debt Instrument [Line Items]
Aggregate principal amount					$ 1,550.0
Interest rate					5.00%
Maturity date					May 01, 2028
Senior Secured Notes [Member] \| Second Lien Notes Due 05/01/2029 [Member]
Debt Instrument [Line Items]
Aggregate principal amount					$ 1,000.0
Interest rate					6.75%
Maturity date					May 01, 2029
Senior Secured Notes [Member] \| Takeback Notes [Member]
Debt Instrument [Line Items]
Aggregate principal amount			$ 750.0				$ 750.0
Interest rate			5.875%				5.875%
Maturity date			Nov. 01, 2029
Senior Notes [Member]
Debt Instrument [Line Items]
Common stock shares issued \| shares			244,401,000				244,401,000
Secured Debt [Member] \| First Lien Notes Due 5/15/2030 [Member]
Debt Instrument [Line Items]
Interest rate									8.75%
Maturity date									May 15, 2030