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Organization Narrative shares in Millions, $ in Millions |  | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | ---
Jul. 31, 2014 | Mar. 31, 2017 | Mar. 31, 2016 | Dec. 31, 2016 USD ($) | Feb. 07, 2017 USD ($) shares
Segment Reporting Information [Line Items] |  |  |  |  |
Number of Reportable Segments |  |  | 2 |  |
Subsequent Event, Date |  | Feb. 06, 2017 |  |  |
Variable Interest Entity, Qualitative or Quantitative Information, Ownership Percentage | 49.00% |  |  |  |
Accelerated Share Repurchases, Settlement (Payment) or Receipt |  |  |  |  | $ 50
Accelerated Share Repurchases, Initial Shares | shares |  |  |  |  | 2.9
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period |  |  |  | $ 15 |

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- Definition Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 25 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6405686&loc=d3e22802-112653 + Details
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