Pension Benefit Plans (Funded Status Of Pension Plans) (Details) - Pension benefit plans - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Change in benefit obligation:
Service cost	$ (42.2)	$ (40.0)	$ (45.4)
Change in plan assets:
Fair value of plan assets at beginning of year	3,204.2
Fair value of plan assets at end of year	2,896.7	3,204.2
Non-U.S. plan
Change in benefit obligation:
Benefit obligation at beginning of year	(1,571.8)	(1,493.0)
Service cost	(35.5)	(32.7)
Interest cost	(25.1)	(25.5)
Employee contributions	(9.3)	(8.2)
Benefits and other expenses paid	51.4	58.3
Acquisitions and other	(3.6)	0.0
Actuarial gain (loss)	68.9	51.4
Amendments, settlements and curtailments	26.5	10.5
Foreign exchange rate impact	56.2	(132.6)
Benefit obligation at end of year	(1,442.3)	(1,571.8)	(1,493.0)
Change in plan assets:
Fair value of plan assets at beginning of year	1,199.3	1,042.9
Actual return (loss) on plan assets	(19.9)	74.6
Employer contributions	52.4	44.7
Employee contributions	9.3	8.2
Amendments and settlements	(28.2)	(3.7)
Benefits and other expenses paid	(51.4)	(58.3)
Acquisitions and other	1.9	0.0
Foreign exchange rate impact	(45.0)	90.9
Fair value of plan assets at end of year	1,118.4	1,199.3	1,042.9
Funded status	(323.9)	(372.5)
United States | Domestic plan
Change in benefit obligation:
Benefit obligation at beginning of year	(2,612.9)	(2,558.1)
Service cost	(6.7)	(7.3)
Interest cost	(81.0)	(82.3)
Employee contributions	0.0	0.0
Benefits and other expenses paid	179.0	181.8
Acquisitions and other	0.0	0.0
Actuarial gain (loss)	145.2	(139.9)
Amendments, settlements and curtailments	31.4	(7.1)
Foreign exchange rate impact	0.0	0.0
Benefit obligation at end of year	(2,345.0)	(2,612.9)	(2,558.1)
Change in plan assets:
Fair value of plan assets at beginning of year	2,004.9	1,868.2
Actual return (loss) on plan assets	(72.1)	265.3
Employer contributions	55.1	53.2
Employee contributions	0.0	0.0
Amendments and settlements	(30.6)	0.0
Benefits and other expenses paid	(179.0)	(181.8)
Acquisitions and other	0.0	0.0
Foreign exchange rate impact	0.0	0.0
Fair value of plan assets at end of year	1,778.3	2,004.9	$ 1,868.2
Funded status	$ (566.7)	$ (608.0)