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Quarterly Financial Data (Unaudited) - Consolidated Operating Results by Quarter (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]                      
Revenues $ 2,102,966 $ 2,042,186 $ 1,792,430 $ 1,713,737 $ 1,899,272 $ 1,939,438 $ 1,872,340 $ 1,861,386 $ 7,651,319 $ 7,572,436 $ 7,747,229
Gross profit 307,688 302,582 200,217 203,313 223,039 235,215 227,505 237,906 1,013,800 923,665 1,168,794
Net income (loss) 88,358 74,152 16,729 20,859 (4,882) 218,956 49,565 58,185 200,098 321,824 315,082
Net income (loss) attributable to common stock 87,583 73,742 16,562 20,496 (5,074) 216,388 46,109 53,484 198,383 310,907 296,714
Net income (loss) from continuing operations attributable to common stock $ 88,530 $ 73,137 $ 16,562 $ 20,496 $ (2,586) $ 43,176 $ 32,007 $ 47,689 $ 198,725 $ 120,286 $ 269,224
Earnings (loss) per share from continuing operations attributable to common stock - basic and diluted $ 0.57 $ 0.47 $ 0.11 $ 0.13 $ (0.02) $ 0.23 $ 0.15 $ 0.22 $ 1.26 $ 0.62 $ 1.22