Quarterly report pursuant to Section 13 or 15(d)

Goodwill and Other Intangibles - Goodwill (Details)

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Goodwill and Other Intangibles - Goodwill (Details)
$ in Thousands
3 Months Ended
Mar. 31, 2021
USD ($)
item
Dec. 31, 2020
USD ($)
Changes in the carrying amount of goodwill    
Number of reporting units | item 2  
Gross Goodwill, at beginning of period $ 2,172,706  
Additions 20,228  
Gross Goodwill, at end of period 2,192,934 $ 2,172,706
Accumulated Impairment Losses (762,021)  
Net Goodwill 1,430,913 1,410,685
Impairment of goodwill   0
Installation    
Changes in the carrying amount of goodwill    
Gross Goodwill, at beginning of period 1,726,356  
Additions 20,228  
Gross Goodwill, at end of period 1,746,584 1,726,356
Accumulated Impairment Losses (762,021)  
Net Goodwill 984,563  
Distribution    
Changes in the carrying amount of goodwill    
Gross Goodwill, at beginning of period 446,350  
Gross Goodwill, at end of period 446,350 $ 446,350
Net Goodwill $ 446,350