Cash tender principal amount.

No definition available.

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Data Type:	xbrli:monetaryItemType
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- Definition

The number of business days within the early cash tender offer period.

+ References

No definition available.

+ Details

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- Definition

Repayment of notes by early cash tender premium amount.

+ References

No definition available.

+ Details

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Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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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

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12355-112629

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=117329964&loc=d3e12317-112629

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585

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Indebtedness - Early Extinguishment of Debt - Additional Information (Detail) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended				12 Months Ended
	Sep. 30, 2020	Jan. 31, 2020	Sep. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Repayment of notes by early cash tender premium amount	$ 5,300	$ 15,100	$ 5,300
Early cash tender offer period	10 days	10 days
Gain (Loss) on early extinguishment of debt			39,600			$ 5,400	$ 14,068	$ 5,415	$ 0
5.75% Senior Notes Due 2021 and 5.0% senior notes due 2022 and 5.875% Senior Notes Due 2022 and 5.75% senior subordinated notes due 2021
Debt Instrument [Line Items]
Cash tender principal amount	$ 500,000
Gain (Loss) on early extinguishment of debt			(8,000)
Five Point Seven Five Percent Senior Notes Due Two Thousand And Twenty One And Five Point Eight Seven Five Percent Senior Notes Due Two Thousand Twenty Two
Debt Instrument [Line Items]
Cash tender principal amount		$ 500,000
Gain (Loss) on early extinguishment of debt				$ (17,500)
5.75% Senior Subordinated Notes Due 2021
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 1,100				$ 1,100
Interest rate on notes	5.75%		5.75%		5.75%		5.75%	5.75%
5.00% Senior Subordinated Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 1,000				$ 1,000
Interest rate on notes	5.00%		5.00%		5.00%		5.00%	5.00%
5.75% Senior Notes Due 2021
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 12,500		$ 101,800	$ 101,800	$ 12,500
Interest rate on notes	5.75%		5.75%		5.75%	5.75%	5.75%	5.75%
5.875% Senior Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 8,100		$ 31,600	$ 31,600	$ 8,100
Interest rate on notes	5.875%		5.875%		5.875%	5.875%	5.875%	5.875%
5.00% Senior Notes Due 2022
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 51,300		$ 68,100	$ 68,100	$ 51,300
Interest rate on notes	5.00%		5.00%		5.00%	5.00%	5.00%	5.00%
5.00% Senior Notes Due 2023
Debt Instrument [Line Items]
Extinguishment of debt, principal amount			$ 86,900				$ 86,900
Interest rate on notes	5.00%		5.00%		5.00%		5.00%	5.00%