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SEGMENT DATA - Narrative (Detail) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue | $ 1,713,888 | $ 1,537,416 | $ 1,590,368 | $ 1,329,322 | $ 1,717,210 | $ 1,566,582 | $ 1,614,472 | $ 1,361,798 | $ 6,170,994 | $ 6,260,062 | $ 6,241,516
Foreign operations |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 1,500,000 | 1,600,000 | 1,600,000
Identifiable long-lived assets | 598,600 |  |  |  | 540,400 |  |  |  | 598,600 | 540,400 | 629,500
U.S. operations |  |  |  |  |  |  |  |  |  |  |
Revenues from External Customers and Long-Lived Assets [Line Items] |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 4,700,000 | 4,700,000 | 4,600,000
Identifiable long-lived assets | $ 1,300,000 |  |  |  | $ 1,400,000 |  |  |  | $ 1,300,000 | $ 1,400,000 | $ 1,600,000

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