v3.25.2
Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance     $ 17,506.9  
Reclassified out of AOCI $ 111.4 $ (46.8) 165.9 $ (67.0)
Net other comprehensive (loss) income 393.4 (145.0) 543.6 (251.3)
Ending balance 18,942.6 17,702.9 18,942.6 17,702.9
Derivative Contracts        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance 17.1 (2.6) 32.5 (11.0)
Recorded into AOCI (123.2) 67.5 (192.4) 96.3
Reclassified out of AOCI 111.0 (48.1) 164.8 (68.5)
Net other comprehensive (loss) income (12.2) 19.4 (27.6) 27.8
Ending balance 4.9 16.8 4.9 16.8
Marketable Debt Securities        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance 10.6 (15.8) (0.7) (13.9)
Recorded into AOCI 6.0 2.4 17.4 1.4
Reclassified out of AOCI 0.1 (0.4)   (1.3)
Net other comprehensive (loss) income 6.1 2.0 17.4 0.1
Ending balance 16.7 (13.8) 16.7 (13.8)
Pension Plans        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance 70.1 (104.6) 69.7 (110.3)
Recorded into AOCI (0.5) 0.3 (0.9) 4.9
Reclassified out of AOCI 0.3 1.7 1.1 2.8
Net other comprehensive (loss) income (0.2) 2.0 0.2 7.7
Ending balance 69.9 (102.6) 69.9 (102.6)
Foreign Currency Translation        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (1,060.9) (677.2) (1,214.8) (558.7)
Recorded into AOCI 399.7 (168.4) 553.6 (286.9)
Net other comprehensive (loss) income 399.7 (168.4) 553.6 (286.9)
Ending balance (661.2) (845.6) (661.2) (845.6)
Accumulated Other Comprehensive Income (Loss)        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Beginning balance (963.1) (800.2) (1,113.3) (693.9)
Recorded into AOCI 282.0 (98.2) 377.7 (184.3)
Reclassified out of AOCI 111.4 (46.8) 165.9 (67.0)
Net other comprehensive (loss) income 393.4 (145.0) 543.6 (251.3)
Ending balance $ (569.7) $ (945.2) $ (569.7) $ (945.2)