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Legal Matters - Additional Information (Detail) (USD $) | 0 Months Ended | 9 Months Ended | 12 Months Ended | 0 Months Ended
--- | --- | --- | --- | ---
Jan. 27, 2014 Class plaintiffs | Jun. 30, 2014 Class plaintiffs | Jun. 30, 2013 Class plaintiffs | Sep. 30, 2013 Class plaintiffs | Dec. 16, 2013 Interchage Litigation
Loss Contingencies [Line Items] |  |  |  |  |  |  |
Payments on litigation matters |  | $ 0 | [1] | $ 4,033,000,000 | [1] | $ 4,033,000,000 |
Adjustment to payments for litigation | 1,100,000,000 |  |  |  |  |  |
Damages sought by plaintiff from all defendant parties |  |  |  |  |  |  | $ 54,000,000,000
[1] | Payments made in fiscal 2013 are associated with the interchange multidistrict litigation. See Note 13—Legal Matters.

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- Definition The amount of cash paid for the settlement of litigation or for other legal issues during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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