Derivatives Instruments - Effect of Derivative Instruments on Statement of Financial Position (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Derivative [Line Items]
Interest expense	$ 6.2	$ 8.1
Interest Expense \| Interest Rate Swap
Derivative [Line Items]
Cash flow hedges - interest rate swaps, reclassification to interest expense	$ 0.3

Amount of the cost of borrowed funds accounted for as interest expense.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration