The estimated net amount of existing gains or losses on cash flow hedges at the reporting date expected to be reclassified to earnings within the next 12 months.

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Nominal or face amount used to calculate payment on derivative.

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Number of interest rate derivative instruments held by the entity at the reporting date.

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Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Derivatives and Hedging Activities - Narrative (Details) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2021 USD ($) lease_renewal_option	Mar. 31, 2021 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2021 USD ($) lease_renewal_option	Jun. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Amount estimated to be reclassified as a reduction to interest expense over next 12 months					$ 25.8
Derivative notional amount	$ 1,200.0				1,200.0		$ 1,200.0
Amount of unrealized losses recorded in OCI	(0.2)	$ (6.4)	$ (7.3)	$ 25.2	(6.6)	$ 17.9
Derivatives not designated as hedging instruments
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative notional amount	435.0				$ 435.0
Amount of unrealized losses recorded in OCI	$ 55.0
Interest Rate Swap
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Number of interest rate swaps \| lease_renewal_option	9				9
Derivative notional amount	$ 435.0				$ 435.0
Interest Rate Swap \| Derivatives in cash flow hedging relationships
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative notional amount	$ 1,200.0				$ 1,200.0
Three Pay-fixed Interest Rate Swaps \| LIBOR \| Minimum
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Variable interest rate of derivative instrument (as a percent)	0.75%				0.75%
Three Pay-fixed Interest Rate Swaps \| Derivatives not designated as hedging instruments \| LIBOR \| Minimum
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Variable interest rate of derivative instrument (as a percent)	1.00%				1.00%
Three Receive-fixed Interest Rate Swaps \| Derivatives not designated as hedging instruments \| LIBOR \| Minimum
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Variable interest rate of derivative instrument (as a percent)	1.00%				1.00%