Pension Benefit Plans (Components Of Net Periodic Pension Costs) (Details) - Pension benefit plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ (31.4)	$ (32.3)	$ (32.0)
Net periodic pension benefit (cost)	(16.2)	4.7	$ 0.9
U.S. Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Service cost	(6.4)	(6.7)
Interest cost	(88.6)	(80.9)
Expected return on plan assets	125.3	132.1
Amortization of prior service (cost) credit	(0.9)	(0.9)
Amortization of net loss	(25.7)	(31.3)
Curtailment and settlement (losses) gains recognized	0.0	0.0
Net periodic pension benefit (cost)	3.7	12.3
Non-U.S. plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	(25.0)	(25.6)
Interest cost	(23.9)	(24.0)
Expected return on plan assets	40.2	43.4
Amortization of prior service (cost) credit	0.2	0.5
Amortization of net loss	(4.4)	(5.5)
Curtailment and settlement (losses) gains recognized	(7.0)	3.6
Net periodic pension benefit (cost)	$ (19.9)	$ (7.6)