XML 22 R14.htm IDEA: XBRL DOCUMENT ﻿
v2.3.0.11

Asset Retirement Obligations | 9 Months Ended
--- | ---
Jun. 30, 2011
Asset Retirement Obligations [Abstract] |
Asset Retirement Obligations | 9. Asset Retirement Obligations During the nine months ended June 30, 2011, TVA’s total ARO liability increased $145 million. The increase was comprised of $39 million of new revisions in the cost estimates related to TVA’s nuclear AROs and $118 million of ARO accretion. This increase was partially offset by ash area settlement projects that were conducted during the first nine months of 2011. The nuclear and non-nuclear accretion were deferred as regulatory assets. During the nine months ended June 30, 2011, $36 million of the related regulatory assets were amortized into expense since this amount was collected in rates.
Reconciliation of Asset Retirement Obligation Liability Nine Months Ended June 30, 2011 |
|  | Nuclear |  |  | Non-nuclear |  |  | Total |
Balance at beginning of period |  | $ | 1,940 |  |  | $ | 1,023 |  |  | $ | 2,963 |
Settlements (ash storage areas) |  |  | — |  |  |  | (12 | ) |  |  | (12 | )
Accretion (recorded as regulatory asset) |  |  | 82 |  |  |  | 36 |  |  |  | 118 |
Change in nuclear estimate |  |  | 39 |  |  |  | — |  |  |  | 39 |
Balance at end of period |  | $ | 2,061 |  |  | $ | 1,047 |  |  | $ | 3,108 |

X
- Details
Name: | us-gaap_AssetRetirementObligationDisclosureAbstract
Namespace Prefix: | us-gaap
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for an asset retirement obligation and the associated long-lived asset. An asset retirement obligation is a legal obligation associated with the disposal or retirement from service of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 143 -Paragraph 22 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7569-110849 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
Name: | us-gaap_AssetRetirementObligationDisclosureTextBlock
Namespace Prefix: | us-gaap
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration