CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income	$ 110,645,000	$ 110,521,000	$ 201,445,000	$ 304,802,000
Other comprehensive income (loss), net of tax:
Change in fair value on available-for-sale securities, net of tax	523,000	25,259,000	69,402,000	87,153,000
Change in fair value of cash flow hedges, net of tax	(5,213,000)	494,000	60,426,000	6,584,000
Amortization (accretion) of net unrealized losses (gains) on securities transferred from available-for-sale to held-to-maturity, net of tax	(1,523,000)	56,000	(3,504,000)	126,000
Net loss on cash flow hedges reclassified from other comprehensive income into net income, net of tax	156,000	1,129,000	1,858,000	946,000
Net loss (gain) on sale of investment securities reclassified from other comprehensive income into net income, net of tax	(481,000)	(308,000)	(728,000)	4,438,000
Total other comprehensive income (loss), net of tax	(6,538,000)	26,630,000	127,454,000	99,247,000
Total comprehensive income	$ 104,107,000	$ 137,151,000	$ 328,899,000	$ 404,049,000