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Shareholders' Equity And Earnings Per Share (Components Of Other Comprehensive Income (Loss)) (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Activity Accumulated Other Comprehensive Income [Roll Forward] |  |
Beginning balance | $ 4,498,688 | $ 4,115,995
Other comprehensive (loss) income during the period, net of tax, before reclassifications | (123,803) | (9,994)
Amount reclassified from accumulated other comprehensive income (loss) into net income, net of tax | 3,743 | 4,758
Amount reclassified from accumulated other comprehensive income (loss) related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax | (31) | (42)
Total other comprehensive loss | (120,091) | (5,278)
Ending balance | 4,492,256 | 4,252,511
Accumulated Unrealized Gains (Losses) on Securities |  |
Activity Accumulated Other Comprehensive Income [Roll Forward] |  |
Beginning balance | 8,724 | 70,737
Other comprehensive (loss) income during the period, net of tax, before reclassifications | (151,114) | (44,519)
Amount reclassified from accumulated other comprehensive income (loss) into net income, net of tax | (183) | (154)
Amount reclassified from accumulated other comprehensive income (loss) related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax | (31) | (42)
Total other comprehensive loss | (151,328) | (44,715)
Ending balance | (142,604) | 26,022
Accumulated Unrealized Gains (Losses) on Derivative Instruments |  |
Activity Accumulated Other Comprehensive Income [Roll Forward] |  |
Beginning balance | 27,111 | (23,090)
Other comprehensive (loss) income during the period, net of tax, before reclassifications | 25,023 | 32,345
Amount reclassified from accumulated other comprehensive income (loss) into net income, net of tax | 3,926 | 4,912
Amount reclassified from accumulated other comprehensive income (loss) related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax | 0 | 0
Total other comprehensive loss | 28,949 | 37,257
Ending balance | 56,060 | 14,167
Accumulated Foreign Currency Translation Adjustments |  |
Activity Accumulated Other Comprehensive Income [Roll Forward] |  |
Beginning balance | (31,743) | (32,265)
Other comprehensive (loss) income during the period, net of tax, before reclassifications | 2,288 | 2,180
Amount reclassified from accumulated other comprehensive income (loss) into net income, net of tax | 0 | 0
Amount reclassified from accumulated other comprehensive income (loss) related to amortization of unrealized gains on investment securities transferred to held-to-maturity from available-for-sale, net of tax | 0 | 0
Total other comprehensive loss | 2,288 | 2,180
Ending balance | (29,455) | (30,085)
Accumulated other comprehensive income (loss) |  |
Activity Accumulated Other Comprehensive Income [Roll Forward] |  |
Beginning balance | 4,092 | 15,382
Total other comprehensive loss | (120,091) | (5,278)
Ending balance | $ (115,999) | $ 10,104

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