Capitalized financing fees and premium.

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Repayments of principal to refinance debt.

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No definition available.

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Revolving credit facility acquired.

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Swap agreement expiration period.

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Unamortized financing fees.

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Unused letters of credit.

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No definition available.

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- Definition

Amount of amortization expense attributable to debt discount (premium) and debt issuance costs.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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No definition available.

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Date the debt agreement requires the first payment to be made, in CCYY-MM-DD format.

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The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate and the maturity of the reference rate used, such as three months or six months LIBOR.

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No definition available.

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

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Net increase or decrease in the carrying amount of the debt instrument for the period.

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

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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.

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No definition available.

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Earliest date the outstanding debt instruments are required to be repaid, in CCYY-MM-DD format.

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Description of the payment terms of the debt instrument (for example, whether periodic payments include principal and frequency of payments) and discussion about any contingencies associated with the payment.

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Amount of the required periodic payments applied to principal.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Amount, before accumulated amortization, of debt issuance costs classified as noncurrent. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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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.

+ References

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt - Additional Information (Details) - USD ($)	1 Months Ended					3 Months Ended			6 Months Ended		9 Months Ended		12 Months Ended
Debt - Additional Information (Details) - USD ($)	Aug. 31, 2021	Jul. 31, 2021	Aug. 31, 2020	May 31, 2020	May 31, 2017	Sep. 30, 2021	Jun. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Jul. 31, 2019	Nov. 30, 2017
Debt Instrument [Line Items]
Aggregate increase in debt liability											$ 60,000,000
Debt balance						$ 2,882,000,000					2,882,000,000		$ 4,078,000,000
Amortization of financing fees and benefits						(1,000,000)
Interest expense related to debt instruments						25,000,000		$ 51,000,000	$ 105,000,000			$ 151,000,000
Interest Expense
Debt Instrument [Line Items]
Amortization of financing fees and benefits						(1,000,000)		4,000,000	8,000,000	$ 8,000,000		13,000,000
Revolving Credit Facility
Debt Instrument [Line Items]
Debt term					5 years
Maturity Date					May 01, 2022
Line of credit, maximum borrowing capacity					$ 250,000,000
Line of credit						0					0
Capitalized financing fees	$ 1,000,000
Revolving Credit Facility \| Other Assets
Debt Instrument [Line Items]
Unamortized financing fees						1,000,000					1,000,000
Unamortized financing fees						$ 1,000,000					1,000,000		1,000,000
Revolving Credit Facility \| Other Current Assets
Debt Instrument [Line Items]
Unamortized financing fees													$ 1,000,000
Amended Revolving Credit Facility
Debt Instrument [Line Items]
Maturity Date	Aug. 31, 2026		Oct. 31, 2024			Aug. 31, 2026
Line of credit, maximum borrowing capacity	$ 294,000,000		$ 226,000,000			$ 294,000,000					294,000,000
Unused letters of credit						$ 4,000,000					4,000,000
Proceeds from Lines of Credit											$ 0
Other
Debt Instrument [Line Items]
Maturity Date						Dec. 31, 2021					Dec. 31, 2021		Dec. 31, 2021
Revolving credit facility acquired														$ 21,000,000
Line of credit						$ 12,000,000					$ 12,000,000		$ 10,000,000
LIBOR \| Other
Debt Instrument [Line Items]
Debt instrument, variable interest rate											3.50%
Term Loan
Debt Instrument [Line Items]
Debt term					7 years
Repayments of principal to refinance debt			$ 270,000,000
Maturity Date						May 01, 2024							May 01, 2024
Repayment of principal		$ 556,000,000
Term Loan \| LIBOR \| Minimum
Debt Instrument [Line Items]
Debt instrument, variable interest rate			2.75%
Term Loan \| LIBOR \| Maximum
Debt Instrument [Line Items]
Debt instrument, variable interest rate			3.00%
Term Loan, Amended
Debt Instrument [Line Items]
Debt balance			$ 1,986,000,000
Maturity Date			Oct. 31, 2026			Oct. 31, 2026							Oct. 31, 2026
Debt instrument, variable interest rate basis											1‑month
Payment terms											The Company is required to make principal payments at the end of each fiscal quarter based on defined terms in the agreement with the remaining principal balances due on the maturity dates.
Principal payment						$ 563,000,000		$ 277,000,000	$ 13,000,000			$ 291,000,000
Swap agreement expiration period							2024-05
Term Loan, Amended \| Minimum
Debt Instrument [Line Items]
Debt instrument, variable interest rate			0.50%
Term Loan, Amended \| LIBOR \| Minimum
Debt Instrument [Line Items]
Debt instrument, variable interest rate			3.25%
Term Loan, Amended \| LIBOR \| Maximum
Debt Instrument [Line Items]
Debt instrument, variable interest rate			3.50%
Term Loan, Third Incremental
Debt Instrument [Line Items]
Debt balance	$ 525,000,000
Maturity Date	Aug. 31, 2028					Aug. 31, 2028
First mandatory principal payment due			Dec. 31, 2021
Term Loan, Third Incremental \| LIBOR
Debt Instrument [Line Items]
Debt instrument, variable interest rate	0.50%		3.00%
Amended Term Loan, Third Incremental \| LIBOR
Debt Instrument [Line Items]
Debt instrument, variable interest rate	0.50%
Secured Senior Notes
Debt Instrument [Line Items]
Maturity Date				Jun. 01, 2025		Jun. 01, 2025							Jun. 01, 2025
Payment terms											interest at a fixed rate of 5.75% per annum, payable semi-annually on June 1 and December 1 of each year
Face amount				$ 300,000,000
Interest rate				5.75%
Debt payment beginning date				Dec. 01, 2020
Unsecured Senior Notes
Debt Instrument [Line Items]
Maturity Date					Jun. 01, 2025								Jun. 01, 2025
Payment terms											interest at a fixed rate of 6.750% per annum, payable semi-annually on June 1 and December 1 of each year.
Face amount			$ 270,000,000		$ 500,000,000										$ 280,000,000	$ 180,000,000
Interest rate					6.75%