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Revenues and Long-Lived Assets by Geographical Area (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2017
Sep. 30, 2017
 [1]
Jun. 30, 2017
 [1]
Mar. 31, 2017
 [1]
Dec. 31, 2016
Sep. 30, 2016
 [1]
Jun. 30, 2016
 [1]
Mar. 31, 2016
 [1]
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Geographic Area Information [Line Items]                      
Revenues $ 964,345 [1] $ 1,229,591 $ 1,275,924 $ 872,095 $ 913,611 [1] $ 1,241,232 $ 1,214,435 $ 851,424 $ 4,341,955 [1] $ 4,220,702 [1] $ 4,113,239
Long-Lived Assets 709,480       628,803       709,480 628,803  
UNITED STATES                      
Geographic Area Information [Line Items]                      
Revenues                 3,919,684 3,813,204 3,710,977
Long-Lived Assets 540,136       467,728       540,136 467,728  
CANADA                      
Geographic Area Information [Line Items]                      
Revenues                 269,603 267,220 263,908
Long-Lived Assets 163,944       155,758       163,944 155,758  
MEXICO                      
Geographic Area Information [Line Items]                      
Revenues                 152,668 140,278 $ 138,354
Long-Lived Assets $ 5,400       $ 5,317       $ 5,400 $ 5,317  
[1] Sales of residential central air conditioners, heating equipment and parts and supplies are seasonal. Demand related to the residential central air conditioning replacement market is typically highest in the second and third quarters, and demand for heating equipment is usually highest in the fourth quarter. Demand related to the new construction sectors throughout most of the markets is fairly evenly distributed throughout the year except for dependence on housing completions and related weather and economic conditions.