Accumulated Other Comprehensive Income - Tax Effects on Each Component of Accumulated Other Comprehensive Income Recognized in Statements of Comprehensive Income (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Foreign currency cumulative translation adjustments, before tax	$ (71.0)	$ (25.2)	$ (109.9)	$ (42.9)
Unrealized cash flow hedge gains , before tax	64.2	23.0	164.4	70.9
Reclassification adjustments on cash flow hedges, before tax	(16.8)	1.8	(33.0)	3.7
Adjustments to prior service cost and unrecognized actuarial assumptions, before tax	4.7	7.4	9.4	7.1
Total Other Comprehensive (Loss) Income	(18.9)	7.0	30.9	38.8
Foreign currency cumulative translation adjustments, tax	24.6	11.7	76.5	26.7
Unrealized cash flow hedge gains, tax	10.3	4.5	31.2	10.3
Reclassification adjustments on cash flow hedges, tax	(2.4)	0.2	(4.6)	0.3
Adjustments to prior service cost and unrecognized actuarial assumptions, tax	1.0	1.7	2.2	1.8
Other Comprehensive Income, tax	33.5	18.1	105.3	39.1
Foreign currency cumulative translation adjustments, net of tax	(95.6)	(36.9)	(186.4)	(69.6)
Unrealized cash flow hedge gains, net of tax	53.9	18.5	133.2	60.6
Reclassification adjustments on cash flow hedges, net of tax	(14.4)	1.6	(28.4)	3.4
Adjustments to prior service cost and unrecognized actuarial assumptions, net of tax	3.7	5.7	7.2	5.3
Total Other Comprehensive Income (Loss)	$ (52.4)	$ (11.1)	$ (74.4)	$ (0.3)