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Derivative Financial Instruments - Schedule gains (losses) recorded as component of other comprehensive income (loss) in connection with cash flow hedges (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |  |
Opening balance, before-tax amount | $ (7,883) | $ (54,335) | $ (10,921) | $ (4,126)
Net gains (losses) reclassified into statement of income on completion of hedged transactions, before-tax amount | 2,443 | (3,996) | 6,361 | (4,909)
Changes in fair value of effective portion of outstanding derivatives, net | 11,984 | 20,550 | 18,940 | (30,572)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, before Tax, Total | 9,541 | 24,546 | 12,579 | (25,663)
Closing balance, before-tax amount | 1,658 | (29,789) | 1,658 | (29,789)
Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Tax | 1,355 | 9,994 | 1,861 | (1,466)
Net gains (losses) reclassified into statement of income on completion of hedged transactions, tax (expense) or benefit | (526) | 1,029 | (1,463) | 722
Net gains (losses) reclassified into statement of income on completion of hedged transactions, before-tax amount | (2,278) | (3,661) | (3,721) | 7,492
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification, Tax | (1,752) | (4,690) | (2,258) | 6,770
Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Tax | (397) | 5,304 | (397) | 5,304
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax | (6,528) | (44,341) | (9,060) | (5,592)
Net gains (losses) reclassified into statement of income on completion of hedged transactions, net of tax amount | 1,917 | (2,967) | 4,898 | (4,187)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), before Reclassification, after Tax | 9,706 | 16,889 | 15,219 | (23,080)
Net income (loss) on cash flow hedging derivatives, net of taxes (Note 7) | 7,789 | 19,856 | 10,321 | (18,893)
AOCI, Cash Flow Hedge, Cumulative Gain (Loss), after Tax | $ 1,261 | $ (24,485) | $ 1,261 | $ (24,485)

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- Definition Accumulated pretax change in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. + References No definition available. + Details
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- Definition Tax effect on accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses. + References No definition available. + Details
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- Definition Amount, after tax, of accumulated gain (loss) on derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 + Details
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- Definition Amount, after tax and reclassification, of gain (loss) from derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 + Details
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