XML 139 R76.htm IDEA: XBRL DOCUMENT v3.20.4
Segment Information - Assets (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Segment Reporting Information [Line Items]    
Total assets $ 74,111 $ 70,817
Operating Segments | P&C Commercial Lines    
Segment Reporting Information [Line Items]    
Total assets 45,482 42,041
Operating Segments | P&C Personal Lines    
Segment Reporting Information [Line Items]    
Total assets 5,969 6,310
Operating Segments | Property & Casualty Other Operations    
Segment Reporting Information [Line Items]    
Total assets 3,505 3,560
Operating Segments | Group Benefits [Member]    
Segment Reporting Information [Line Items]    
Total assets 14,732 14,595
Operating Segments | Hartford Funds    
Segment Reporting Information [Line Items]    
Total assets 662 634
Corporate    
Segment Reporting Information [Line Items]    
Total assets $ 3,761 $ 3,677