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v3.3.1.900

Employee and Retiree Benefits (Narrative) (Details) - USD ($) | 1 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 31, 2016 | Jan. 31, 2015 | Jan. 31, 2014 | Jan. 31, 2013 | Jan. 31, 2012 | Feb. 27, 2016 | Dec. 31, 2016
Postretirement health care benefits age requirement before distribution occurs |  |  |  |  |  | 55 years |
Postretirement health care benefits continuous service requirement |  |  |  |  |  | 15 years |
Dollar cap liability reduction | 10.00% | 10.00% | 10.00% | 10.00% | 10.00% |  |
Postretirement health care retiree age requirement |  |  |  |  |  | 65 years |
Subsequent Event [Member] |  |  |  |  |  |  |
Postretirement health care reimbursement account |  |  |  |  |  |  | $ 700,000

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- Definition Defined Benefit Plan, Age Requirement Before Distribution Occurs + References No definition available. + Details
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- Definition Defined Benefit Plan, Dollar Cap Liability Reduction + References No definition available. + Details
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- Definition The amount that the employer will fund the health reimbursement account. + References No definition available. + Details
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- Definition Defined Benefit Plan, Retiree Age Requirement + References No definition available. + Details
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- Definition Defined Benefit Plan, Service Requirement + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Period Type: |