Other Post Retirement Employee Benefit Plans (Funded Status Of The Domestic Plans) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 2,378.3	$ 1,480.3
Other Post-Retirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Benefit obligation at beginning of year	123.7	104.8
Service cost	1.6	0.9
Interest cost	9.5	6.3
Amendments, curtailments and other	2.0	0.5
Actuarial loss (gain)	16.0	23.8
Acquisitions	125.1
Retiree contributions	6.6	1.8
Benefits paid	(19.7)	(14.4)
Benefit obligation at end of year	264.8	123.7
Attributable to discontinued operations	2.5	2.5
Funded status / accrued benefit cost	(264.8)	(123.7)
Funded status / accrued benefit cost - continuing operations	$ (262.3)	$ (121.2)