Derivative Instruments - Interest Rate Swap Instruments (Details) - Designated as Hedging Instrument - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 11, 2019	Feb. 15, 2019
Interest Rate Swap 18
Derivative [Line Items]
Cost to Modify Start Date of Interest Rate Swap	$ 8,239
London Interbank Offered Rate (LIBOR) | Interest Rate Swap Modified
Derivative [Line Items]
Strike Rate		1.97%
London Interbank Offered Rate (LIBOR) | Interest Rate Swap Cancelled
Derivative [Line Items]
Strike Rate			2.21%
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 1
Derivative [Line Items]
Strike Rate	1.97%
Notional Amount	$ 750,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 2
Derivative [Line Items]
Strike Rate	1.74%
Notional Amount	$ 750,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 3
Derivative [Line Items]
Strike Rate	1.59%
Notional Amount	$ 1,100,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 4
Derivative [Line Items]
Strike Rate	1.63%
Notional Amount	$ 595,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 5
Derivative [Line Items]
Strike Rate	1.60%
Notional Amount	$ 325,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 6
Derivative [Line Items]
Strike Rate	1.93%
Notional Amount	$ 550,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 7
Derivative [Line Items]
Strike Rate	2.86%
Notional Amount	$ 400,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 8
Derivative [Line Items]
Strike Rate	2.23%
Notional Amount	$ 800,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 9
Derivative [Line Items]
Strike Rate	2.85%
Notional Amount	$ 400,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 10
Derivative [Line Items]
Strike Rate	2.86%
Notional Amount	$ 400,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 11
Derivative [Line Items]
Strike Rate	1.30%
Notional Amount	$ 450,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 12
Derivative [Line Items]
Strike Rate	2.13%
Notional Amount	$ 550,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 13
Derivative [Line Items]
Strike Rate	2.99%
Notional Amount	$ 325,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 14
Derivative [Line Items]
Strike Rate	2.99%
Notional Amount	$ 595,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 15
Derivative [Line Items]
Strike Rate	1.47%
Notional Amount	$ 450,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 16
Derivative [Line Items]
Strike Rate	2.90%
Notional Amount	$ 1,100,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 17
Derivative [Line Items]
Strike Rate	2.23%
Notional Amount	$ 550,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 18
Derivative [Line Items]
Strike Rate	2.90%
Notional Amount	$ 400,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 19
Derivative [Line Items]
Strike Rate	3.14%
Notional Amount	$ 400,000
London Interbank Offered Rate (LIBOR) | Interest Rate Swap 20
Derivative [Line Items]
Strike Rate	3.16%
Notional Amount	$ 400,000