Quarterly Results of Operations (unaudited) - Summary of Quarterly Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 2,022,500	$ 2,033,693	$ 2,014,706	$ 2,050,762	$ 2,395,007	$ 2,373,280	$ 2,393,869	$ 2,341,040	$ 8,121,661	$ 9,503,196	$ 9,016,321
Gross profit	508,471	491,988	495,641	478,309	441,400	416,800	399,088	416,175	1,974,409	1,673,463	1,854,587
Income (loss) from continuing operations	18,818	20,233	26,519	(73,651)	5,704	(15,136)	(963)	(9,792)	(8,081)	(20,187)	325,359
Net income (loss)	$ 18,480	$ 20,233	$ 26,519	$ (73,740)	$ 5,277	$ (15,972)	$ (645)	$ (8,956)	$ (8,508)	$ (20,296)	$ 819,357
Basic (in dollars per share)	$ 0.20	$ 0.22	$ 0.28	$ (0.78)	$ 0.06	$ (0.16)	$ (0.01)	$ (0.10)	$ (0.09)	$ (0.22)	$ 8.67
Diluted (in dollars per share)	$ 0.20	$ 0.22	$ 0.28	$ (0.78)	$ 0.06	$ (0.16)	$ (0.01)	$ (0.10)	$ (0.09)	$ (0.22)	$ 8.58