Other Comprehensive Income - Schedule of Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 3,428,052	$ 1,600,153	$ 1,433,141
Other comprehensive income (loss) before reclassifications	(88,720)	111,444	30,172
Less: Amounts reclassified from accumulated other comprehensive income	22,210	13,363	(1,742)
Net current-period other comprehensive income	(110,930)	98,081	31,914
Ending balance	3,406,352	3,428,052	1,600,153
Defined Benefit Pension Plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(21,253)	(81,269)	(59,389)
Other comprehensive income (loss) before reclassifications	14,629	53,650	(27,119)
Less: Amounts reclassified from accumulated other comprehensive income	(1,153)	(6,366)	(5,239)
Net current-period other comprehensive income	15,782	60,016	(21,880)
Ending balance	(5,471)	(21,253)	(81,269)
AOCI Including Portion Attributable to Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	54,234	(43,847)	(75,761)
Ending balance	(56,696)	54,234	(43,847)
Unrealized Gains and (Losses) on Cash Flow Hedges | Unrealized Gains and (Losses) on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	29,815	15,624	2,988
Other comprehensive income (loss) before reclassifications	0	33,696	14,576
Less: Amounts reclassified from accumulated other comprehensive income	22,454	19,505	1,940
Net current-period other comprehensive income	(22,454)	14,191	12,636
Ending balance	7,361	29,815	15,624
Unrealized (Losses) and Gains on Available for Sale Securities | Unrealized (Losses) and Gains on Available for Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	45,672	21,798	(19,360)
Other comprehensive income (loss) before reclassifications	(103,349)	24,098	42,715
Less: Amounts reclassified from accumulated other comprehensive income	909	224	1,557
Net current-period other comprehensive income	(104,258)	23,874	41,158
Ending balance	$ (58,586)	$ 45,672	$ 21,798