Changes in Accumulated Other Comprehensive Income (Loss) by Component (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	$ 11,594.0	$ 10,533.3
Reclassified out of AOCI	61.3	19.6	$ 106.3
Net other comprehensive (loss) income	(32.3)	129.2	49.8
Ending balance	13,167.1	11,594.0	10,533.3
Derivative Contracts
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(13.5)	(29.2)	(15.3)
Recorded into AOCI	8.6	39.9	(78.4)
Reclassified out of AOCI	40.0	(24.2)	64.5
Net other comprehensive (loss) income	48.6	15.7	(13.9)
Ending balance	35.1	(13.5)	(29.2)
Marketable Debt Securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(1.1)	14.6	6.1
Recorded into AOCI	(41.3)	(14.1)	10.3
Reclassified out of AOCI	(1.2)	(1.6)	(1.8)
Net other comprehensive (loss) income	(42.5)	(15.7)	8.5
Ending balance	(43.6)	(1.1)	14.6
Pension Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(269.8)	(578.1)	(517.7)
Recorded into AOCI	136.4	262.9	(104.0)
Reclassified out of AOCI	22.5	45.4	43.6
Net other comprehensive (loss) income	158.9	308.3	(60.4)
Ending balance	(110.9)	(269.8)	(578.1)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(636.7)	(457.6)	(573.2)
Recorded into AOCI	(197.3)	(179.1)	115.6
Net other comprehensive (loss) income	(197.3)	(179.1)	115.6
Ending balance	(834.0)	(636.7)	(457.6)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Beginning balance	(921.1)	(1,050.3)	(1,100.1)
Recorded into AOCI	(93.6)	109.6	(56.5)
Reclassified out of AOCI	61.3	19.6	106.3
Net other comprehensive (loss) income	(32.3)	129.2	49.8
Ending balance	$ (953.4)	$ (921.1)	$ (1,050.3)