Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance			$ 13,167.1
Reclassified out of AOCI	$ 42.2	$ (9.9)	(65.3)	$ 2.7
Net other comprehensive (loss) income	95.4	(234.0)	175.6	(190.6)
Ending balance	15,079.3	12,518.0	15,079.3	12,518.0
Derivative Contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	11.9	12.9	35.1	(13.5)
Recorded into AOCI	(66.9)	16.4	(113.3)	34.5
Reclassified out of AOCI	41.5	(16.6)	64.7	(8.3)
Net other comprehensive (loss) income	(25.4)	(0.2)	(48.6)	26.2
Ending balance	(13.5)	12.7	(13.5)	12.7
Marketable Debt Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(33.1)	(26.7)	(43.6)	(1.1)
Recorded into AOCI	(6.8)	(7.6)	4.5	(33.1)
Reclassified out of AOCI	(0.9)	(0.2)	(1.7)	(0.3)
Net other comprehensive (loss) income	(7.7)	(7.8)	2.8	(33.4)
Ending balance	(40.8)	(34.5)	(40.8)	(34.5)
Pension Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(110.0)	(261.9)	(110.9)	(269.8)
Recorded into AOCI	0.4	7.9	0.6	11.4
Reclassified out of AOCI	1.6	6.9	2.3	11.3
Net other comprehensive (loss) income	2.0	14.8	2.9	22.7
Ending balance	(108.0)	(247.1)	(108.0)	(247.1)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(742.0)	(602.0)	(834.0)	(636.7)
Recorded into AOCI	126.5	(240.8)	218.5	(206.1)
Net other comprehensive (loss) income	126.5	(240.8)	218.5	(206.1)
Ending balance	(615.5)	(842.8)	(615.5)	(842.8)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(873.2)	(877.7)	(953.4)	(921.1)
Recorded into AOCI	53.2	(224.1)	110.3	(193.3)
Reclassified out of AOCI	42.2	(9.9)	65.3	2.7
Net other comprehensive (loss) income	95.4	(234.0)	175.6	(190.6)
Ending balance	$ (777.8)	$ (1,111.7)	$ (777.8)	$ (1,111.7)