Derivative Financial Instruments and Hedging Activities - Narrative (Details) - USD ($)	Jun. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Debt face amount	$ 605,000,000.0
Cash collateral held by counterparties subject to master netting agreements	$ 25,900,000	$ 39,300,000

Face (par) amount of debt instrument at time of issuance.

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Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant