v2.4.0.8

Shareholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2013
Shareholders' Equity |
Changes in accumulated other comprehensive loss | During the years ended December 31, 2013 and 2012, the changes in accumulated other comprehensive loss, presented net of tax, were as follows (in millions):
|  | Year ended December 31, 2013 |  |  | Year ended December 31, 2012 |
|  | Defined benefit pension plans |  |  | Derivative instruments |  |  | Marketable securities |  |  | Total |  |  | Defined benefit pension plans |  |  | Derivative instruments |  |  | Marketable securities |  |  | Total |
Balance, beginning of period |  | $ | (511 | ) |  | $ | (10 | ) |  | $ | — |  |  | $ | (521 | ) |  | $ | (501 | ) |  | $ | 7 |  |  | $ | (2 | ) |  | $ | (496 | )
Other comprehensive income (loss) before reclassifications |  |  | 202 |  |  |  | (6 | ) |  |  | — |  |  |  | 196 |  |  |  | (52 | ) |  |  | 1 |  |  |  | — |  |  |  | (51 | )
Reclassifications to net income |  |  | 45 |  |  |  | 18 |  |  |  | — |  |  |  | 63 |  |  |  | 42 |  |  |  | (1 | ) |  |  | 2 |  |  |  | 43 |
Other comprehensive income (loss), net |  |  | 247 |  |  |  | 12 |  |  |  | — |  |  |  | 259 |  |  |  | (10 | ) |  |  | — |  |  |  | 2 |  |  |  | (8 | )
Reclassification from redeemable noncontrolling interest |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (17 | ) |  |  | — |  |  |  | (17 | )
Balance, end of period |  | $ | (264 | ) |  | $ | 2 |  |  | $ | — |  |  | $ | (262 | ) |  | $ | (511 | ) |  | $ | (10 | ) |  | $ | — |  |  | $ | (521 | )
Schedule of significant reclassifications from accumulated other comprehensive income to net income | Significant reclassifications from accumulated other comprehensive income to net income included the following (in millions):
|  |  |  |  | Years ended December 31, |
|  | Statement of operations classification |  |  | 2013 |  |  | 2012 |  |  | 2011 |
Defined benefit pension plans |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Actuarial losses |  |  |  |  | $ | 48 |  |  | $ | 45 |  |  | $ | 26 |
Prior service costs |  |  |  |  |  | — |  |  |  | (1 | ) |  |  | (1 | )
Settlements and curtailments |  |  |  |  |  | 1 |  |  |  | 3 |  |  |  | — |
Total amortization, before income taxes |  | Net periodic benefit costs (a) |  |  |  | 49 |  |  |  | 47 |  |  |  | 25 |
Income tax (benefit) expense |  | Income tax expense |  |  |  | (4 | ) |  |  | (5 | ) |  |  | 13 |
Total amortization, net of income taxes |  |  |  |  | $ | 45 |  |  | $ | 42 |  |  | $ | 38 |
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(a) | We recognize the amortization of accumulated other comprehensive income components related to defined benefit pension plans in net periodic benefit costs. In the year ended December 31, 2013, the amortization components of our net periodic benefit costs were $37 million, recorded in operating and maintenance costs, and $12 million, recorded in general and administrative costs. In the year ended December 31, 2012, the amortization components of our net periodic benefit costs were $31 million, recorded in operating and maintenance costs, and $16 million, recorded in general and administrative costs. In the year ended December 31, 2011, the amortization components of our net periodic benefit costs were $17 million, recorded in operating and maintenance costs, and $8 million, recorded in general and administrative costs. See Note 14—Postemployment Benefit Plans.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 + Details
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