Other Comprehensive Income/Loss (Tables)

3 Months Ended

Mar. 31, 2023

Equity [Abstract]

Schedule of Other Comprehensive Income and Related Tax Effects

The gross amounts of each component of other comprehensive income (loss) and the related tax effects are as follows:

	Pre-tax				Tax Expense (Benefit)				Net of Tax
Three Months Ended March 31,	2023		2022		2023		2022		2023		2022
Investment securities available-for sale:
Change in net unrealized gains (losses) during the period	$	78.2	$	(252.6)	$	19.6	$	(62.7)	$	58.6	$	(189.9)
Reclassification adjustment for net losses included in income	23.4		0.1		5.8		—		17.6		0.1
Reclassification adjustment for securities transferred from held-to-maturity to available-for-sale	(7.2)		0.2		(1.8)		0.1		(5.4)		0.1
Net change in unamortized losses on available-for-sale investment securities transferred into held-to-maturity	(0.4)		(23.0)		(0.1)		(5.7)		(0.3)		(17.3)
Change in net unrealized loss on derivatives	10.0		21.3		2.5		5.3		7.5		16.0
Total other comprehensive income (loss)	$	104.0	$	(254.0)	$	26.0	$	(63.0)	$	78.0	$	(191.0)

Schedule of Accumulated Other Comprehensive Income (Loss)

The components of accumulated other comprehensive loss, net of related tax effects, are as follows:

	March 31, 2023		December 31, 2022
Net unrealized loss on investment securities available-for-sale	$	(400.2)	$	(471.0)
Net unrealized loss on investment securities transferred to held-to-maturity	(4.9)		(4.5)
Net unrealized gain (loss) on derivatives	6.0		(1.6)
Net accumulated other comprehensive loss	$	(399.1)	$	(477.1)