XML 57 R49.htm IDEA: XBRL DOCUMENT v3.25.3
Earnings Per Share - Additional Information (Detail) - USD ($)
shares in Millions, $ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2025
Jun. 30, 2025
Sep. 30, 2024
Sep. 30, 2025
Sep. 30, 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Undistributed earnings $ 3   $ 1 $ 13 $ 1
Preferred stock dividends paid   $ 1   $ 1  
Stock Awards and Stock Options [Member]          
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]          
Common shares equivalents that would have been included in diluted average shares outstanding       1  
Number of anti-dilutive securities       3