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Retirement Plans (Tables) | 9 Months Ended
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Sep. 30, 2015
Retirement Plans [Abstract] |
Schedule Of Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans |
|  | Pension Benefits |  | Postretirement Benefits
|  | Three Months Ended |  | Nine Months Ended |  | Three Months Ended |  | Nine Months Ended
|  | September 30, |  | September 30, |  | September 30, |  | September 30,
|  | 2015 |  | 2014 |  | 2015 |  | 2014 |  | 2015 |  | 2014 |  | 2015 |  | 2014
|  | (Millions)
Service cost |  | $ | 9 |  | $ | 7 |  | $ | 25 |  | $ | 22 |  | $ | - |  | $ | - |  | $ | - |  | $ | -
Interest cost |  |  | 13 |  |  | 14 |  |  | 39 |  |  | 41 |  |  | - |  |  | - |  |  | - |  |  | -
Expected return on plan assets |  |  | (14) |  |  | (13) |  |  | (44) |  |  | (40) |  |  | - |  |  | - |  |  | - |  |  | -
Amortization of prior service cost (1) |  |  | 1 |  |  | 1 |  |  | 3 |  |  | 3 |  |  | - |  |  | (1) |  |  | (1) |  |  | (1)
Net actuarial loss (gain) (1) |  |  | 5 |  |  | 4 |  |  | 15 |  |  | 14 |  |  | - |  |  | - |  |  | - |  |  | (1)
Net periodic benefit cost (2) |  | $ | 14 |  | $ | 13 |  | $ | 38 |  | $ | 40 |  | $ | - |  | $ | (1) |  | $ | (1) |  | $ | (2)
__________________________ (1) These net periodic benefit costs were reclassified out of other comprehensive earnings in the current period. (2) Net periodic benefit cost is a component of general and administrative expenses in the accompanying consolidated comprehensive statements of earnings.

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- Definition Tabular disclosure of the components of net benefit costs for pension plans and/or other employee benefit plans including service cost, interest cost, expected return on plan assets, gain (loss), prior service cost or credit, transition asset or obligation, and gain (loss) recognized due to settlements or curtailments. + 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 (h) -URI http://asc.fasb.org/extlink&oid=58740216&loc=d3e1928-114920 + Details
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