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

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Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable.

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

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

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Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders.

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Senior Notes (Detail) - USD ($)	Dec. 17, 2021	Dec. 06, 2019	May 08, 2018	Dec. 31, 2021	Sep. 30, 2021
Debt Instrument [Line Items]
Carrying value of Senior Notes				$ 1,300,000,000	$ 750,000,000
Fair value of Senior Notes				1,357,250,000	810,000,000
Senior Notes
Debt Instrument [Line Items]
Debt issuance costs				15,800,000	9,000,000
May 2018 Senior Notes
Debt Instrument [Line Items]
Senior Notes issued in a private placement to a group of institutional investors			$ 400,000,000
Carrying value of Senior Notes				400,000,000	400,000,000
Fair value of Senior Notes				437,000,000	453,000,000
Debt instrument, maturity date			May 15, 2026
Debt Instrument, Interest Rate, Stated Percentage			5.25%
Dec 2019 Senior Notes
Debt Instrument [Line Items]
Carrying value of Senior Notes				900,000,000	350,000,000
Fair value of Senior Notes				$ 920,250,000	$ 357,000,000
Senior Notes December Twenty one
Debt Instrument [Line Items]
Senior Notes issued in a private placement to a group of institutional investors	$ 550,000,000
Debt instrument, maturity date	Jun. 15, 2028
Debt Instrument, Interest Rate, Stated Percentage	4.00%
Senior Notes 2019
Debt Instrument [Line Items]
Senior Notes issued in a private placement to a group of institutional investors		$ 350,000,000
Debt instrument, maturity date		Jun. 15, 2028
Debt Instrument, Interest Rate, Stated Percentage		4.00%