Plan Status of U.S. Plan, Non-U.S. Plan, and supplemental Plan (Detail) (USD $)	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U.S. Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	$ 918,000,000	$ 797,600,000
Projected Benefit Obligation	1,030,400,000	904,600,000	762,900,000
Plan Assets at Fair Value	1,277,700,000	1,094,100,000	982,100,000
Funded Status at end of year	247,300,000	189,500,000
Weighted-Average Assumptions:
Discount Rates	4.25%	4.75%
Rate of Increase in Compensation Level	4.02%	4.02%
Expected Long-Term Rate of Return on Assets	7.75%	8.00%
Non U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	158,100,000	127,100,000
Projected Benefit Obligation	158,100,000	127,100,000	116,100,000
Plan Assets at Fair Value	133,900,000	123,300,000	122,200,000
Funded Status at end of year	(24,200,000)	(3,800,000)
Weighted-Average Assumptions:
Discount Rates	4.42%	5.02%
Expected Long-Term Rate of Return on Assets	4.76%	5.28%
Supplemental Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation	98,900,000	89,900,000
Projected Benefit Obligation	106,400,000	100,300,000	86,900,000
Funded Status at end of year	$ (106,400,000)	$ (100,300,000)
Weighted-Average Assumptions:
Discount Rates	4.25%	4.75%
Rate of Increase in Compensation Level	4.02%	4.02%

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

+ References+ Details

1) For defined benefit pension plans, the benefit obligation is the projected benefit obligation, which is the actuarial present value as of a date of all benefits attributed by the pension benefit formula to employee service rendered prior to that date. 2) For other postretirement defined benefit plans, the benefit obligation is the accumulated postretirement benefit obligation, which is the actuarial present value of benefits attributed to employee service rendered to a particular date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Accumulated Postretirement Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6503904

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 6

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph 5

-Subparagraph a

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 132R

-Paragraph E1

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Projected Benefit Obligation

-URI http://asc.fasb.org/extlink&oid=6522206

+ Details

- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References+ Details