Pension Benefit Plans (Funded Status Of Pension Plans) (Details) - Pension benefit plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Change in benefit obligation:
Service cost	$ (31.4)	$ (32.3)	$ (32.0)
Change in plan assets:
Fair value of plan assets at beginning of year	2,810.0
Fair value of plan assets at end of year	3,004.2	2,810.0
U.S. Pension Benefits
Change in benefit obligation:
Benefit obligation at beginning of year	(2,340.5)	(2,608.0)
Service cost	(6.4)	(6.7)
Interest cost	(88.6)	(80.9)
Employee contributions	0.0	0.0
Benefits and other expenses paid	164.4	178.6
Acquisitions and other	0.0	0.0
Actuarial (loss) gain	(236.8)	145.1
Amendments, settlements and curtailments	39.9	31.4
Foreign exchange rate impact	0.0	0.0
Benefit obligation at end of year	(2,468.0)	(2,340.5)	(2,608.0)
Change in plan assets:
Fair value of plan assets at beginning of year	1,778.3	2,004.9
Actual return (loss) on plan assets	282.6	(72.1)
Employer contributions	9.7	54.7
Employee contributions	0.0	0.0
Amendments and settlements	(40.6)	(30.6)
Benefits and other expenses paid	(164.4)	(178.6)
Acquisitions and other	0.0	0.0
Foreign exchange rate impact	0.0	0.0
Fair value of plan assets at end of year	1,865.6	1,778.3	2,004.9
Funded status	(602.4)	(562.2)
Non-U.S. plan
Change in benefit obligation:
Benefit obligation at beginning of year	(1,314.5)	(1,428.5)
Service cost	(25.0)	(25.6)
Interest cost	(23.9)	(24.0)
Employee contributions	(5.2)	(5.3)
Benefits and other expenses paid	47.6	44.5
Acquisitions and other	0.0	(3.6)
Actuarial (loss) gain	(152.2)	59.8
Amendments, settlements and curtailments	47.4	15.0
Foreign exchange rate impact	(20.7)	53.2
Benefit obligation at end of year	(1,446.5)	(1,314.5)	(1,428.5)
Change in plan assets:
Fair value of plan assets at beginning of year	1,031.7	1,103.0
Actual return (loss) on plan assets	114.9	(19.9)
Employer contributions	43.5	45.3
Employee contributions	5.2	5.3
Amendments and settlements	(36.5)	(16.8)
Benefits and other expenses paid	(47.6)	(44.5)
Acquisitions and other	0.0	1.9
Foreign exchange rate impact	27.4	(42.6)
Fair value of plan assets at end of year	1,138.6	1,031.7	$ 1,103.0
Funded status	$ (307.9)	$ (282.8)