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Summary of Disaggregated Revenue (Detail) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Dec. 31, 2020
 [1]
Sep. 30, 2020
 [1]
Jun. 30, 2020
 [1]
Mar. 31, 2020
 [1]
Dec. 31, 2019
 [1]
Sep. 30, 2019
 [1]
Jun. 30, 2019
 [1]
Mar. 31, 2019
 [1]
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Disaggregation of Revenue [Line Items]                      
Revenues from product lines, percentage                 100.00% 100.00% 100.00%
Revenues $ 1,154,716 $ 1,536,671 $ 1,355,385 $ 1,008,156 $ 1,072,315 $ 1,394,915 $ 1,371,854 $ 931,278 $ 5,054,928 [1] $ 4,770,362 [1] $ 4,546,653
United States                      
Disaggregation of Revenue [Line Items]                      
Revenues                 4,535,262 4,184,206 3,981,056
Canada                      
Disaggregation of Revenue [Line Items]                      
Revenues                 301,727 294,040 291,685
Latin America and the Caribbean                      
Disaggregation of Revenue [Line Items]                      
Revenues                 $ 217,939 $ 292,116 $ 273,912
HVAC Equipment                      
Disaggregation of Revenue [Line Items]                      
Revenues from product lines, percentage                 69.00% 68.00% 67.00%
Other HVAC Products                      
Disaggregation of Revenue [Line Items]                      
Revenues from product lines, percentage                 28.00% 28.00% 29.00%
Commercial Refrigeration Products                      
Disaggregation of Revenue [Line Items]                      
Revenues from product lines, percentage                 3.00% 4.00% 4.00%
[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 first and fourth quarters. 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.