XML 64 R35.htm IDEA: XBRL DOCUMENT
v3.5.0.2

Asset Retirement Obligations (Tables) | 9 Months Ended
--- | ---
Jun. 30, 2016
Asset Retirement Obligation Disclosure [Abstract] |
Asset Retirement Obligation Activity |
Asset Retirement Obligation Activity
| Nuclear |  | Non-Nuclear |  | Total |
Balance at September 30, 2015 | $ | 2,187 |  |  | $ | 1,656 |  |  | $ | 3,843 |  |
Settlements | — |  |  | (82 | ) |  | (82 | ) |
Change in estimate | 198 |  |  | (79 | ) |  | 119 |  |
Additional obligations | — |  |  | 15 |  |  | 15 |  |
Accretion (recorded as regulatory asset) | 79 |  |  | 33 |  |  | 112 |  |
Balance at June 30, 2016 | $ | 2,464 |  |  | $ | 1,543 |  |  | $ | 4,007 |  | (1 | )
Note (1) The current portion of ARO in the amount of $192 million and $161 million is included in Accounts payable and accrued liabilities at June 30, 2016 and September 30, 2015, respectively.

X
- References No definition available. + Details
Name: | us-gaap_AssetRetirementObligationDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the carrying amount of a liability for asset retirement obligations. + References Reference 1: 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_ScheduleOfAssetRetirementObligationsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration