v3.26.1
Segment Information - Schedule of Adjusted Operating Income (Loss) (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Revenues:        
Premiums $ 875 $ 865 $ 1,756 $ 1,727
Net investment income 836 802 1,602 1,541
Policy fees and other income 153 157 309 315
Total revenues 1,901 1,796 3,678 3,582
Less:        
Benefits and other changes in policy reserves 1,233 1,195 2,457 2,412
Amortization of deferred acquisition costs and intangibles 54 57 109 117
Interest expense 26 26 51 52
Provision (benefit) for income taxes 26 35 57 71
Operating Segments        
Less:        
Reportable segment adjusted operating income (loss) available to Genworth Financial, Inc.’s common stockholders 33 97 141 171
Enact | Operating Segments        
Revenues:        
Premiums 245 245 488 490
Net investment income 73 66 145 129
Policy fees and other income 1 1 4 3
Total revenues 319 312 637 622
Less:        
Benefits and other changes in policy reserves 33 25 70 56
Cash flow assumption updates 0 0 0 0
Actual variances from expected experience  0 0 0 0
Amortization of deferred acquisition costs and intangibles 2 3 4 5
Interest expense 13 12 25 24
Other segment expenses 49 51 96 100
Provision (benefit) for income taxes 45 47 92 94
Adjusted operating income (loss) attributable to noncontrolling interests 34 33 67 65
Reportable segment adjusted operating income (loss) available to Genworth Financial, Inc.’s common stockholders 143 141 283 278
Closed Block | Operating Segments        
Revenues:        
Premiums 627 617 1,263 1,232
Net investment income 758 732 1,449 1,403
Policy fees and other income 150 156 300 312
Total revenues 1,535 1,505 3,012 2,947
Less:        
Benefits and other changes in policy reserves 1,202 1,171 2,391 2,359
Cash flow assumption updates 5 8 13 7
Actual variances from expected experience  127 52 163 57
Amortization of deferred acquisition costs and intangibles 49 53 100 110
Interest expense 0 0 0 0
Other segment expenses 286 269 514 534
Provision (benefit) for income taxes (24) (4) (27) (13)
Adjusted operating income (loss) attributable to noncontrolling interests 0 0 0 0
Reportable segment adjusted operating income (loss) available to Genworth Financial, Inc.’s common stockholders $ (110) $ (44) $ (142) $ (107)