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Pension And Other Postretirement Benefit Plans (Narrative) (Detail) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
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Sep. 30, 2015 | Mar. 31, 2015 | Sep. 30, 2015 | Sep. 30, 2014
Pension Plans, Defined Benefit |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Defined benefit plans contribution by the company |  |  | $ 17.0 |
Defined benefit plans contribution by the company |  | $ 15.2 |  | $ 24.5
Other Postretirement Benefit Plans, Defined Benefit |  |  |  |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |  |  |  |
Defined benefit plans contribution by the company |  |  | $ 1.0 |
Defined benefit plans contribution by the company | $ 0.2 |  |  | $ 1.0

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- Definition The total estimated amount of benefits expected to be paid in the current fiscal year, comprised of amounts contributed in the current fiscal year as well as expected future payments in the current fiscal year. + 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 Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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