v3.26.1
Earnings Per Share (Details) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Earnings Per Share, Basic and Diluted, by Common Class, Including Two Class Method [Line Items]    
Earnings for basic computations $ 196 $ 269
Earnings for diluted computations $ 196 $ 269
Weighted-average common stock shares outstanding, basic (in shares) 119,965,259 124,114,149
Dilutive stock options and restricted stock (in shares) 219,888 361,521
Weighted-average common stock shares outstanding, diluted (in shares) 120,185,147 124,475,670
Earnings per common share:    
Basic (in dollars per share) $ 1.63 $ 2.17
Diluted (in dollars per share) $ 1.63 $ 2.16
Restricted Stock    
Earnings per common share:    
Unvested shares participating in the payment of the company's dividends declared (in shares) 1,100,000 800,000