Derivatives and Hedging Activities (Details) $ in Millions	3 Months Ended
	Mar. 31, 2020 USD ($) swap	Mar. 31, 2019 USD ($)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Estimated reduction to interest expense	$ 22.1
Number of interest rate swaps | swap	4
Loss recognized in OCI (effective portion)	$ 28.6	$ 12.8
Loss reclassified from accumulated OCI to interest expense (effective portion)	3.4	$ 1.3
Interest Rate Swap One
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative notional amount	$ 1,200.0