XML 48 R35.htm IDEA: XBRL DOCUMENT v3.10.0.1
Segments of Operations - Revenues by segment and sub-segment (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Segment Reporting Information [Line Items]        
Total premiums earned $ 1,327 $ 1,267 $ 3,595 $ 3,354
Net investment income 527 471 1,552 1,366
Other income 54 48 146 154
Revenues before realized gains (losses) 1,974 1,847 5,488 5,058
Realized gains (losses) on securities 34 (12) (28) (1)
Total revenues 2,008 1,835 5,460 5,057
Property and Casualty Insurance        
Segment Reporting Information [Line Items]        
Total premiums earned 1,327 1,267 3,595 3,354
Net investment income 108 94 323 276
Other income [1] 4 1 8 21
Revenues before realized gains (losses) 1,439 1,362 3,926 3,651
Annuity        
Segment Reporting Information [Line Items]        
Net investment income 413 375 1,219 1,082
Other income 27 26 80 79
Revenues before realized gains (losses) 440 401 1,299 1,161
Other        
Segment Reporting Information [Line Items]        
Revenues before realized gains (losses) 95 84 263 246
Specialty Property and transportation | Property and Casualty Insurance        
Segment Reporting Information [Line Items]        
Total premiums earned 526 527 1,250 1,226
Specialty casualty | Property and Casualty Insurance        
Segment Reporting Information [Line Items]        
Total premiums earned 616 568 1,790 1,613
Specialty financial | Property and Casualty Insurance        
Segment Reporting Information [Line Items]        
Total premiums earned 149 142 457 435
Other specialty | Property and Casualty Insurance        
Segment Reporting Information [Line Items]        
Total premiums earned $ 36 $ 30 $ 98 $ 80
[1] Includes income of $13 million (before noncontrolling interest) from the sale of a hotel in the first quarter of 2017.