XML 57 R45.htm IDEA: XBRL DOCUMENT v3.19.2
Goodwill - Changes in Carrying Value of Goodwill by Operating Segment (Detail)
$ in Thousands
6 Months Ended
Jun. 30, 2019
USD ($)
Goodwill [Line Items]  
Goodwill, Written off Related to Sale of Business Unit $ 1,627
Goodwill [Roll Forward]  
Beginning balance 3,432,786
Goodwill of acquired businesses 120,502
Ending balance $ 3,551,661
Document Period End Date Jun. 30, 2019
Services  
Goodwill [Line Items]  
Goodwill, Written off Related to Sale of Business Unit $ 1,627
Goodwill [Roll Forward]  
Beginning balance 2,063,150
Goodwill of acquired businesses 95,086
Ending balance 2,156,609
National Programs  
Goodwill [Line Items]  
Goodwill, Written off Related to Sale of Business Unit 0
Goodwill [Roll Forward]  
Beginning balance 926,206
Goodwill of acquired businesses 0
Ending balance 926,206
Wholesale Brokerage  
Goodwill [Line Items]  
Goodwill, Written off Related to Sale of Business Unit 0
Goodwill [Roll Forward]  
Beginning balance 291,622
Goodwill of acquired businesses 6,063
Ending balance 297,685
Services  
Goodwill [Line Items]  
Goodwill, Written off Related to Sale of Business Unit 0
Goodwill [Roll Forward]  
Beginning balance 151,808
Goodwill of acquired businesses 19,353
Ending balance $ 171,161