Derivative Instruments and Hedging Activities - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Derivative [Line Items]
Net unrealized gains (losses) arising during the period	$ (57,056,000)	$ 10,000,000
Unrealized gain, after tax	(43,277,000)	7,566,000
Pre-tax income (loss)	(5,600,000)	(5,400,000)
Cash flow hedge loss to be reclassified	116,000,000
Cash flow hedge termination loss	20,000,000
Reclaim cash collateral	46,900,000		$ 69,700,000
Obligation to return cash collateral	5,700,000		$ 5,700,000
Cash Flow Hedges
Derivative [Line Items]
Net unrealized gains (losses) arising during the period	0	0
Unrealized gain, after tax	$ 0	$ 0