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Amounts Recognized in AOCI (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance, net of income tax | $ 4,989,514 |  |
Other comprehensive income (loss), Pretax amount | 4,419 | $ 35,258 | $ 2,360
Other comprehensive income (loss), Income tax effect | (8,905) | (2,664) | (4,648)
Other comprehensive income (loss), Income tax effect, net of adoption of ASU 2018-02 | (7,354) |  |
Total other comprehensive income (loss), net of tax | (4,486) | 32,594 | (2,288)
Total other comprehensive income (loss), Change, net of income tax and ASU 2018-02 | (2,935) |  |
Ending balance, net of income tax | 5,389,262 | 4,989,514 |
Net Unrealized Gains (Losses) on Effective Cash Flow Hedges |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance, net of income tax | 4,208 | 19 |
Other comprehensive income (loss), Pretax amount | (2,805) | 6,679 |
Other comprehensive income (loss), Income tax effect |  | (2,490) |
Other comprehensive income (loss), Income tax effect, net of adoption of ASU 2018-02 | 1,577 |  |
Total other comprehensive income (loss), net of tax |  | 4,189 |
Total other comprehensive income (loss), Change, net of income tax and ASU 2018-02 | (1,228) |  |
Ending balance, net of income tax | 2,980 | 4,208 | 19
Foreign Currency Translation Adjustment |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance, net of income tax | 12,481 | (14,197) |
Other comprehensive income (loss), Pretax amount | 9,718 | 26,678 |
Other comprehensive income (loss), Income tax effect, net of adoption of ASU 2018-02 | (6,824) |  |
Total other comprehensive income (loss), net of tax |  | 26,678 |
Total other comprehensive income (loss), Change, net of income tax and ASU 2018-02 | 2,894 |  |
Ending balance, net of income tax | 15,375 | 12,481 | (14,197)
Unrealized Loss on Marketable Security |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance, net of income tax | (2,758) | (1,398) |
Other comprehensive income (loss), Pretax amount | 4,398 | (2,169) |
Other comprehensive income (loss), Income tax effect |  | 809 |
Other comprehensive income (loss), Income tax effect, net of adoption of ASU 2018-02 | (1,640) |  |
Total other comprehensive income (loss), net of tax |  | (1,360) |
Total other comprehensive income (loss), Change, net of income tax and ASU 2018-02 | 2,758 |  |
Ending balance, net of income tax |  | (2,758) | (1,398)
Minimum Pension Liability |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance, net of income tax | (6,754) | (9,841) |
Other comprehensive income (loss), Pretax amount | (6,892) | 4,070 |
Other comprehensive income (loss), Income tax effect |  | (983) |
Other comprehensive income (loss), Income tax effect, net of adoption of ASU 2018-02 | (467) |  |
Total other comprehensive income (loss), net of tax |  | 3,087 |
Total other comprehensive income (loss), Change, net of income tax and ASU 2018-02 | (7,359) |  |
Ending balance, net of income tax | (14,113) | (6,754) | (9,841)
Accumulated Other Comprehensive Income (Loss) |  |  |
Accumulated Other Comprehensive Income Loss [Line Items] |  |  |
Beginning balance, net of income tax | 7,177 | (25,417) |
Ending balance, net of income tax | $ 4,242 | $ 7,177 | $ (25,417)

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