Comprehensive Loss (Components Of Other Comprehensive Loss) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Other comprehensive (loss) earnings before reclassifications, before tax	$ 125.9	$ (6.2)	$ 435.5	$ (148.6)
Net other comprehensive (loss) earnings, before tax	123.5	(18.2)	421.5	(169.4)
Income tax (benefit) provision	(83.0)	16.0	(127.0)	58.4
Gains and Losses on Derivatives in Cash Flow Hedging Relationships
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2024, net of tax	9.0	13.6	32.3	(8.0)
Other comprehensive (loss) earnings before reclassifications, before tax	(29.5)	17.1	(48.3)	50.8
Net other comprehensive (loss) earnings, before tax	(29.0)	8.7	(56.5)	37.4
Income tax (benefit) provision	(7.2)	2.1	(11.4)	9.2
Balance at June 30, 2025, net of tax	(12.8)	20.2	(12.8)	20.2
Gains and Losses on Derivatives in Cash Flow Hedging Relationships | Foreign currency forward contracts
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive (loss) earnings, before tax:	(0.7)	(10.0)	(10.6)	(16.6)
Gains and Losses on Derivatives in Cash Flow Hedging Relationships | Interest rate swaps
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive (loss) earnings, before tax:	1.2	1.6	2.4	3.2
Gains and Losses on Net Investment Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2024, net of tax	359.1	369.6	492.6	237.1
Other comprehensive (loss) earnings before reclassifications, before tax	(355.2)	68.4	(528.9)	237.5
Net other comprehensive (loss) earnings, before tax	(355.2)		(528.9)	237.5
Income tax (benefit) provision	(76.3)	14.8	(116.5)	51.4
Balance at June 30, 2025, net of tax	80.2	423.2	80.2	423.2
Gains and Losses on Available-for-Sale Fixed Income Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2024, net of tax	(0.8)	(1.4)	(1.2)	(1.2)
Other comprehensive (loss) earnings before reclassifications, before tax	0.2	0.0	0.8	(0.3)
Net other comprehensive (loss) earnings, before tax			0.8
Income tax (benefit) provision	0.0	0.0	0.2	(0.1)
Balance at June 30, 2025, net of tax	(0.6)	(1.4)	(0.6)	(1.4)
Defined Pension Plan Items
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2024, net of tax	253.8	266.4	254.2	271.4
Other comprehensive (loss) earnings before reclassifications, before tax	3.4	(2.0)	6.1	(4.4)
Net other comprehensive (loss) earnings, before tax		(5.6)		(11.8)
Income tax (benefit) provision	0.5	(0.9)	0.7	(2.1)
Balance at June 30, 2025, net of tax	253.8	261.7	253.8	261.7
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2024, net of tax	(3,492.0)	(3,589.2)	(3,990.8)	(3,246.7)
Other comprehensive (loss) earnings before reclassifications, before tax	507.0	(89.7)	1,005.8	(432.2)
Net other comprehensive (loss) earnings, before tax	507.0	(89.7)	1,005.8	(432.2)
Income tax (benefit) provision	0.0	0.0	0.0	0.0
Balance at June 30, 2025, net of tax	(2,985.0)	(3,678.9)	(2,985.0)	(3,678.9)
Totals
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at December 31, 2024, net of tax	(2,870.9)	(2,941.0)	(3,212.9)	(2,747.4)
Balance at June 30, 2025, net of tax	(2,664.4)	(2,975.2)	(2,664.4)	(2,975.2)
Amortization of actuarial gain included in SG&A
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive (loss) earnings, before tax:	$ (2.9)	(4.2)	$ (5.8)	(8.5)
Amortization of prior service costs included in SG&A
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Amounts reclassified from accumulated other comprehensive (loss) earnings, before tax:		$ 0.6		$ 1.1