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Pension And Other Postretirement Benefit Plans | 6 Months Ended
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Sep. 30, 2012
Defined Benefit Pension Plans and Defined Benefit Postretirement Plans Disclosure [Abstract] |
Pension and Other Postretirement Benefits Disclosure [Text Block] | PENSION AND OTHER POSTRETIREMENT BENEFIT PLANS The Company has several defined benefit pension plans covering U.S. salaried employees and certain foreign and other employee groups. These plans provide retirement benefits based primarily on employee compensation and years of service. The Company also provides postretirement health and life insurance benefits for eligible U.S. employees attaining specific age and service levels. The components of the Company’s net periodic benefit cost were as follows:
|  | Pension Benefits |  | Other Postretirement Benefits
|  | Three Months Ended September 30, |  | Three Months Ended September 30,
(in thousands of dollars) |  | 2012 |  | 2011 |  | 2012 |  | 2011
Service cost |  | $ | 1,046 |  |  | $ | 1,274 |  |  | $ | 146 |  |  | $ | 189 |
Interest cost |  | 3,153 |  |  | 3,386 |  |  | 569 |  |  | 578 |
Expected return on plan assets |  | (3,197 | ) |  | (3,646 | ) |  | (31 | ) |  | (34 | )
Settlement costs |  | 1,329 |  |  | — |  |  | — |  |  | — |
Net amortization and deferral |  | 2,846 |  |  | 1,335 |  |  | 48 |  |  | (59 | )
Net periodic benefit cost |  | $ | 5,177 |  |  | $ | 2,349 |  |  | $ | 732 |  |  | $ | 674 |
|  | Pension Benefits |  | Other Postretirement Benefits
|  | Six Months Ended September 30, |  | Six Months Ended September 30,
(in thousands of dollars) |  | 2012 |  | 2011 |  | 2012 |  | 2011
Service cost |  | $ | 2,270 |  |  | $ | 2,564 |  |  | $ | 294 |  |  | $ | 378 |
Interest cost |  | 6,319 |  |  | 6,837 |  |  | 1,145 |  |  | 1,156 |
Expected return on plan assets |  | (6,694 | ) |  | (7,355 | ) |  | (62 | ) |  | (68 | )
Settlement costs |  | 1,329 |  |  | — |  |  | — |  |  | — |
Net amortization and deferral |  | 5,364 |  |  | 2,677 |  |  | 100 |  |  | (117 | )
Net periodic benefit cost |  | $ | 8,588 |  |  | $ | 4,723 |  |  | $ | 1,477 |  |  | $ | 1,349 |
During the six months ended September 30, 2012, the Company made contributions of approximately $5.6 million to its pension plans. Additional contributions of approximately $11.1 million are expected during the remaining six months of fiscal year 2013, including $5.5 million to the Company's ERISA-regulated U.S. plan and $5.6 million to its non-ERISA regulated and other plans.

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- Definition The entire disclosure for pension and other postretirement benefits. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -URI http://asc.fasb.org/topic&trid=2235017 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 87 -Paragraph 264 -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 158 -Paragraph 7, 21, 22 -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 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. 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Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph h -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 8: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 30 -Paragraph 26 -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. 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Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 132R -Paragraph 5 -Subparagraph q -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 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 106 -Paragraph 518 -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. + Details
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