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Benefit Plans (Tables) | 6 Months Ended
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Jun. 30, 2014
Pension Plan [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Net Benefit Costs [Table Text Block] | Net periodic pension cost consisted of the following:
|  | For the Six Months Ended June 30, |  | For the Three Months Ended June 30,
|  | 2014 |  | 2013 |  | 2014 |  | 2013
|  | (in millions)
Service cost |  | $ | 34 |  |  | $ | 43 |  |  | $ | 17 |  |  | $ | 22 |
Interest cost |  | 172 |  |  | 157 |  |  | 86 |  |  | 79 |
Expected return on plan assets |  | (260 | ) |  | (247 | ) |  | (130 | ) |  | (124 | )
Amortization: |  |  |  |  |  |  |  |
Net loss |  | 75 |  |  | 136 |  |  | 37 |  |  | 67 |
Prior service cost |  | 5 |  |  | 5 |  |  | 2 |  |  | 2 |
Net periodic pension cost |  | $ | 26 |  |  | $ | 94 |  |  | $ | 12 |  |  | $ | 46 |
Other Postretirement Benefit Plan, Defined Benefit [Member] |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Net Benefit Costs [Table Text Block] | Net postretirement health care costs consisted of the following:
|  | For the Six Months Ended June 30, |  | For the Three Months Ended June 30,
|  | 2014 |  | 2013 |  | 2014 |  | 2013
|  | (in millions)
Service cost |  | $ | 8 |  |  | $ | 10 |  |  | $ | 4 |  |  | $ | 5 |
Interest cost |  | 54 |  |  | 51 |  |  | 27 |  |  | 26 |
Amortization: |  |  |  |  |  |  |  |
Net loss |  | 14 |  |  | 28 |  |  | 7 |  |  | 14 |
Prior service credit |  | (21 | ) |  | (22 | ) |  | (10 | ) |  | (11 | )
Net postretirement health care costs |  | $ | 55 |  |  | $ | 67 |  |  | $ | 28 |  |  | $ | 34 |

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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=28361610&loc=d3e1928-114920 + Details
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