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Other Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2012
Other Assets, Net |
Components of other assets, net of accumulated amortization |
|  | December 31, |
|  | 2012 |  | 2011 |
Debt issue costs |  | $ | 69 |  | $ | 53 |
Fair value of derivative instruments |  | 10 |  | 20 |
Intangible assets |  | 642 |  | 498 |
Other |  | 54 |  | 59 |
|  | 775 |  | 630 |
Accumulated amortization |  | (189 | ) | (84 | )
|  | $ | 586 |  | $ | 546 |
Components of intangible assets that have finite lives |
|  |  |  | December 31, 2012 |  | December 31, 2011 |
|  | Estimated Useful |  |  |  | Accumulated |  |  |  |  |  | Accumulated |  |  |
|  | Lives (Years) |  | Cost |  | Amortization |  | Net |  | Cost |  | Amortization |  | Net |
Customer contracts and relationships |  | 1 - 20 |  | $ | 558 |  | $ | (157 | ) | $ | 401 |  | $ | 426 |  | $ | (61 | ) | $ | 365 |
Property tax abatement |  | 7 - 13 |  | 38 |  | (10 | ) | 28 |  | 38 |  | (6 | ) | 32 |
Other agreements |  | 25 - 70 |  | 38 |  | (2 | ) | 36 |  | 26 |  | (1 | ) | 25 |
Emission reduction credits (1) |  | N/A |  | 8 |  | — |  | 8 |  | 8 |  | — |  | 8 |
|  |  |  | $ | 642 |  | $ | (169 | ) | $ | 473 |  | $ | 498 |  | $ | (68 | ) | $ | 430 |
(1) Emission reduction credits are finite-lived and are subject to surrender in exchange for environmental permits.
Estimated amortization expense related to finite-lived intangible assets for the next five years |
2013 |  | $ | 78 |
2014 |  | $ | 53 |
2015 |  | $ | 48 |
2016 |  | $ | 42 |
2017 |  | $ | 40 |

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- Definition Tabular disclosure of the estimated aggregate amortization expense for intangible assets subject to amortization for each of the five succeeding fiscal years. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 + Details
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- Definition Tabular disclosure of assets, excluding financial assets and goodwill, lacking physical substance with a finite life, by either major class or business segment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of noncurrent assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 + Details
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