Accumulated Other Comprehensive Income (Loss) - Reclassifications of Accumulated Other Comprehensive Income to Consolidated Statement of Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Foreign currency contracts	$ 781,450	$ 766,143
Interest Expense	(32,140)	(36,572)
Tax	26,297	23,362
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Tax	295	339
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Foreign currency contracts
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Foreign currency contracts	2,364	2,711
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Interest rate swaps
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Interest Expense	(216)	(216)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member]
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(4,348)	2,836
Accumulated Defined Benefit Plans Adjustment, Net Gain (Loss) Attributable to Parent [Member]
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax	(191)	168
Accumulated Defined Benefit Plans Adjustment
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Tax	1,022	(5,597)
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Total	1,853	2,156
Reclassification out of Accumulated Other Comprehensive Income | Accumulated Defined Benefit Plans Adjustment
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Total	$ (3,517)	$ (2,593)