v3.26.1
Business and Basis of Presentation (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended
Apr. 30, 2026
USD ($)
$ / shares
shares
Mar. 31, 2026
USD ($)
segment
$ / shares
shares
Mar. 31, 2025
USD ($)
Sep. 18, 2025
USD ($)
Apr. 01, 2013
Product Information [Line Items]          
Number of reportable segments | segment   2      
Stock repurchase program, authorized amount       $ 350  
Shares repurchased (in shares) | shares   7,713,425      
Average price ( in usd per share) | $ / shares   $ 8.61      
Shares repurchase cost   $ 67 $ 46    
Subsequent Event          
Product Information [Line Items]          
Shares repurchased (in shares) | shares 2,197,918        
Average price ( in usd per share) | $ / shares $ 8.53        
Stock repurchase program, remaining authorized amount $ 175        
Genworth Holdings          
Product Information [Line Items]          
Ownership percentage of subsidiary         100.00%