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Goodwill and Intangible Assets Goodwill Balances (Tables)
12 Months Ended
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill
Goodwill balances by business segment at December 31, 2018 and 2017 were:
DOLLARS IN MILLIONS
 
2018
 
2017
Preferred Property & Casualty Insurance
 
$
49.6

 
$
49.6

Specialty Property & Casualty Insurance
 
843.4

 
54.0

Life & Health Insurance
 
219.4

 
219.4

Total
 
$
1,112.4

 
$
323.0