Pension And Other Postretirement Benefit Plans - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012 H		Dec. 31, 2011		Dec. 31, 2010
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Number of years balance is paid to participant after retirement	15 years
Plan assets fair value	$ 355.7	[1]	$ 298.7	[1]
Accumulated pension plan benefit obligation	429.5		370.6
Aggregate benefit obligation	418.5		421.9
Pension plans with benefit obligations in excess of plan assets, fair value of assets	288.2		298.7
Pension plans with accumulated benefit obligations in excess of plan assets, fair value of assets	288.2		236.5
Pension plans with accumulated benefit obligations in excess of plan assets, accumulated benefit obligation	373.0		316.4
Net gain (loss)	23.4		38.9
Net gain (loss) after tax	15.0		25.2
Discretionary contribution pension plans	35
Hours of service eligible for defined contribution plan	1,000
Amounts charged to income for defined contribution retirement plan	9.8		7.9		9.5
Nonqualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accumulated pension plan benefit obligation	65.1		57.9
Foreign Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets fair value	73.3		62.2
Benefit obligation	75.9		65.1
Non qualified plan benefit obligation	69.8		63.3
Accumulated pension plan benefit obligation	62.9		54.2
Net periodic benefit cost	3.2		3.7		3.9
Defined contribution plan and small pension arrangement	2.6		2.2		1.9
Pension Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Net gain (loss)	178.2		165.7
Estimated net actuarial loss for pension benefits	13.5
Net periodic benefit cost	33.8		30.1		28.4
Other Postretirement Benefit Plans, Defined Benefit
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Benefit obligation	8.9		9.2
Net periodic benefit cost	0.6		0.6		0.7
Amounts recognized in accumulated other comprehensive loss	3.2		3.4
After tax amount	$ 2.0		$ 2.1

[1] There were no assets categorized as Level 3 at December 31, 2012 and 2011, respectively.