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Cash Flow Hedges, Gains (Losses) Recorded as Component of Other Comprehensive Income (Loss) or Other Comprehensive Income (Detail) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2016 | Mar. 31, 2015
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |
Opening balance, before-tax amount | $ (30,090) | $ (66,786)
Net gains (losses) reclassified into statement of income upon completion of hedged transactions, before-tax amount | (2,902) | (9,254)
Changes in fair value of effective portion of outstanding derivatives, net, before-tax amount | (79) | 24,564
Gain (loss) on cash flow hedging derivatives, net, before-tax amount | 2,823 | 33,818
Closing balance, before-tax amount | (27,267) | (32,968)
Opening balance, tax (expense) or benefit | 9,830 | 23,646
Net gains (losses) reclassified into statement of income upon completion of hedged transactions, tax (expense) or benefit | 702 | 3,251
Changes in fair value of effective portion of outstanding derivatives, net, tax (expense) or benefit | (151) | (8,734)
Gain (loss) on cash flow hedging derivatives, net, tax (expense) or benefit | (853) | (11,985)
Closing balance, tax (expense) or benefit | 8,977 | 11,661
Opening balance, net of tax amount | (20,260) | (43,140)
Net gains (losses) reclassified into statement of income upon completion of hedged transactions, net of tax amount | (2,200) | (6,003)
Changes in fair value of effective portion of outstanding derivatives, net, net of tax amount | (230) | 15,830
Gain (loss) on cash flow hedging derivatives, net of taxes amount | 1,970 | 21,833
Closing balance, net of tax amount | $ (18,290) | $ (21,307)

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- Definition Accumulated change, net of tax, in 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e637-108580 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=36458714&loc=SL7669686-108580 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e681-108580 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35736893&loc=d3e80784-113994 + Details
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