v3.26.3
Share-Based Compensation (Summary of RSU and PSRU Activity) (Detail) - RSUs - RSUs and PRSUs - RSUs and PRSUs
shares in Millions
9 Months Ended
Sep. 30, 2026
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Unvested at December 31, 2025 | shares 1.2
Granted during 2026 | shares 1.1
Vested during 2026 | shares (0.8)
Forfeited during 2026 | shares (0.1)
Unvested at September 30, 2026 | shares 1.4
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]  
Unvested at December 31, 2025 | $ / shares $ 63.46
Granted during 2026 | $ / shares 68.5
Vested during 2026 | $ / shares 65.43
Forfeited during 2026 | $ / shares 65.57
Unvested at September 30, 2026 | $ / shares $ 66.07