Amounts of Assets Acquired and Liabilities Assumed Recognized (Parenthetical) (Detail) (NetSpend Holdings Inc) In Millions, unless otherwise specified	Jul. 01, 2013
NetSpend Holdings Inc
Business Acquisition [Line Items]
Dissenting shareholder, shares	1.6

Number of shares of excess stock held by shareholders.

No definition available.

Name:	us-gaap_ExcessStockSharesOutstanding
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant