Amount of transactions with related party during the financial reporting period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 850
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39603-107864

Name:	us-gaap_RelatedPartyTransactionAmountsOfTransaction
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Related Party Transactions - Narrative (Details) - 9 months ended Sep. 30, 2020 - KKR € in Millions, $ in Millions	EUR (€)	USD ($)
Related Party Transaction, Due to Related Party [Abstract]
Payments for underwriting expense		$ 7.5
Lender in Senior Secured Credit Facilities \| Euro Term Loan Facility
Related Party Transaction, Due to Related Party [Abstract]
Related party transaction amount \| €	€ 43.4
Lender in Senior Secured Credit Facilities \| Dollar Term Loan B Facility
Related Party Transaction, Due to Related Party [Abstract]
Related party transaction amount		$ 39.8