XML 121 R87.htm IDEA: XBRL DOCUMENT v3.19.1

Energy Prepayment Agreement (Details) - USD ($) $ in Billions	3 Months Ended	6 Months Ended
	Mar. 31, 2018	Mar. 31, 2019
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Proceeds from Maturities, Prepayments and Calls of Other Investments	$ 0.0	$ 1.5

X

- Definition

The cash inflow associated with the maturity (principal being due), prepayment and call (request of early payment) of other investments not otherwise defined in the taxonomy.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

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Balance Type:	debit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_RevenueRecognitionMultipleDeliverableArrangementsLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration