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Postretirement Benefit Plans (Details Textual) (USD $) In Millions, unless otherwise specified | 6 Months Ended
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Jun. 30, 2012
Employee Benefit Plan (Textual) [Abstract] |
Remeasurement of projected benefit obligations and plan assets | $ 41.2
Defined benefit plan accumulated other comprehensive income unrecognized actuarial loss before tax | 8.8
Net postretirement liability | 293.1
U.S. Pension Plans [Member] |
Employee Benefit Plans (Additional Textual) [Abstract] |
Contributions made to pension plans | 32.8
Expected additional contributions made to pension plans | $ 0.5

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- Definition Defined benefit plan accumulated other comprehensive income unrecognized actuarial loss before tax. + References No definition available. + Details
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- Definition Defined benefit plan additional contributions by employer. + References No definition available. + Details
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- Definition Increase (decrease) in pension plan funding status + References No definition available. + Details
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- Definition The increase in the fair value of plan assets from contributions made by the employer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph b -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=21915506&loc=d3e1928-114920 + Details
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