Derivative Instruments - Swap Agreements by Counterparty (Detail) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Interest rate swap agreements
Derivative [Line Items]
Notional Amount	$ 915,000	$ 2,501,000

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

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