Nominal or face amount used to calculate payment on derivative.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1B
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5580258-113959

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 1A
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=125515794&loc=SL5579245-113959

Name:	us-gaap_DerivativeNotionalAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

Debt - Currency Swaps (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
Debt - Currency Swaps (Details) - USD ($) $ in Millions	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Debt
Notional Amount	$ 1,331.3		$ 1,331.3		$ 1,524.8
Decrease in net interest expense	1.6	$ 1.3	2.7	$ 2.7
U.S. to Swiss Franc cross-currency and interest rate swap agreements
Debt
Notional Amount	148.9		148.9
U.S. to Euro cross-currency and interest rate swap agreements
Debt
Notional Amount	$ 248.9		$ 248.9