Pension And Other Postretirement Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009
Number of years balance is paid to participant after retirement	15
Plan assets fair value	$ 298.7	[1]	$ 281.6	[1]
Net periodic benefit cost	0.6		0.7		0.8
Defined benefit plan benefit obligation	9.2		9.4		9.5
Accumulated pension plan benefit obligation	370.6		326.5
Aggregate benefit obligation	421.9		377.0
Pension plans with benefit obligations in excess of plan assets, fair value of assets	298.7		281.6
Pension plans with accumulated benefit obligations in excess of plan assets, fair value of assets	236.5		224.8
Pension plans with accumulated benefit obligations in excess of plan assets, accumulated benefit obligation	316.4		278.6
Net gain (loss)	(38.9)		2.6
Net gain (loss) after tax	(25.2)		1.9
Estimated net actuarial loss for pension benefits	0.2		0.2
Discretionary contribution pension plans	30.0
Hours of service eligible for defined contribution plan	1,000
Amounts charged to income for defined contribution retirement plan	7.9		9.5		9.3
Foreign Equity Security [Member]
Plan assets fair value	62.2		56.8
Defined benefit plan benefit obligation	65.1		59.2
Non qualified plan benefit obligation	63.3		55.6
Accumulated pension plan benefit obligation	54.2		47.9
Foreign Plans [Member]
Pension cost attributable to foreign plans	3.7		3.9		1.2
Defined contribution plan and small pension arrangement	2.2		1.9		1.8
Other Postretirement Benefit Plan [Member]
Amounts recognized in accumulated other comprehensive loss	3.4		3.4
After tax amount	2.1		2.1
Pension Benefits [Member]
Estimated net actuarial loss for pension benefits	10.1
Nonqualified Plan [Member]
Accumulated pension plan benefit obligation	$ 57.9		$ 50.9

[1] There were no assets categorized as Level 3 at December 31, 2011 and 2010, respectively.