Long-Term Debt - Schedule of Long-Term Debt (Parenthetical) (Detail)	9 Months Ended
Sep. 30, 2020
Debt Instrument [Line Items]
Total debt average term	9 years 1 month 6 days
Total debt average rate	5.00%
Senior Secured Term Loan Facilities [Member]
Debt Instrument [Line Items]
Effective interest rate	2.80%
Senior Secured Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	5.10%
Other Senior Secured Debt [Member]
Debt Instrument [Line Items]
Effective interest rate	5.00%
Senior Unsecured Notes [Member]
Debt Instrument [Line Items]
Effective interest rate	5.50%

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6036836-161870

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28551-108399

Reference 3: 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

Name:	us-gaap_DebtInstrumentInterestRateEffectivePercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant