v3.26.1
Components of Comprehensive Income, Net of Related Tax (Detail) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Statement of Comprehensive Income [Abstract]        
Net income $ 752.0 $ 723.8 $ 1,357.3 $ 1,228.9
Other comprehensive income (loss) (OCI):        
Unrealized gains (losses) on derivative contracts (13.2) (16.7) 0.4 (38.6)
Tax effect 4.3 4.5 1.8 11.0
Net current period OCI, unrealized (losses) gains on derivative contracts (8.9) (12.2) 2.2 (27.6)
Unrealized (losses) gains on marketable debt securities (7.6) 7.6 (28.9) 23.3
Tax effect 1.8 (1.5) 7.2 (5.9)
Net current period OCI, unrealized gains (losses) on marketable debt securities (5.8) 6.1 (21.7) 17.4
Pension plans 1.3 (1.5) 1.6 (1.1)
Tax effect (0.4) 1.3 (0.5) 1.3
Net current period OCI, pension plans 0.9 (0.2) 1.1 0.2
Foreign currency translation gains 0.5 399.7 13.1 553.6
Net other comprehensive income (loss) (13.3) 393.4 (5.3) 543.6
Comprehensive income $ 738.7 $ 1,117.2 $ 1,352.0 $ 1,772.5