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GOODWILL AND OTHER INTANGIBLE ASSETS Intangible assets included in Other assets and intangibles (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Finite-lived intangible assets, accumulated amortization $ 709,441 $ 656,719
Total intangible assets, gross 1,188,962 1,225,834
Total intangible assets, net 479,521 569,115
Customer lists and relationships [Member]    
Finite-lived intangible assets, gross 413,216 430,026
Finite-lived intangible assets, accumulated amortization 199,645 195,842
Finite-lived intangible assets, net 213,571 234,184
Trademarks, trade names and other [Member]    
Finite-lived intangible assets, gross 24,073 25,886
Finite-lived intangible assets, accumulated amortization 14,945 16,054
Finite-lived intangible assets, net 9,128 9,832
Non-amortized trade names and other [Member]    
Indefinite-lived intangible assets, carrying amount 99,172 137,491
Capitalized software [Member]    
Finite-lived intangible assets, gross 652,501 632,431
Finite-lived intangible assets, accumulated amortization 494,851 444,823
Finite-lived intangible assets, net $ 157,650 $ 187,608
Weighted average [Member]    
Finite-lived intangible assets, useful life 8 years 2 months  
Weighted average [Member] | Customer lists and relationships [Member]    
Finite-lived intangible assets, useful life 14 years 4 months  
Weighted average [Member] | Trademarks, trade names and other [Member]    
Finite-lived intangible assets, useful life 14 years 6 months  
Weighted average [Member] | Capitalized software [Member]    
Finite-lived intangible assets, useful life 4 years 2 months