2.4.0.81070 - Disclosure - Commercial Paper and Other Short-Term Borrowingstruefalsefalse1false falsefalseD2013Q2YTDhttp://www.sec.gov/CIK0001011659duration2013-01-01T00:00:002013-06-30T00:00:001true 1us-gaap_DebtDisclosureAbstractus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalse1falsefalsefalse00falsefalsefalsexbrli:stringItemTypestringfalse0Debt Disclosure [Abstract]2false 2us-gaap_ShortTermDebtTextBlockus-gaap_truenadurationfalsefalsefalsefalsefalsefalsefalsefalseterseLabel1falsefalsefalse00<div style="font-size:10.0pt;font-family:Times New Roman;"> Note 7—Commercial Paper and Other Short-Term Borrowings         The following table is a summary of the Company's commercial paper and other short-term borrowings: <div style="POSITION: relative; PADDING-BOTTOM: 0pt; PADDING-LEFT: 0pt; WIDTH: 80%; PADDING-RIGHT: 0pt; MARGIN-LEFT: 10%; PADDING-TOP: 0pt;">   <div align="center"> <table border="0" cellspacing="0" cellpadding="0" width="100%" style="text-align:left;"> <tr style="padding:0;"> <td style="FONT-FAMILY: arial;" align="left"></td> <td style="FONT-FAMILY: arial;" width="12"></td> <td style="FONT-FAMILY: arial;" width="8" align="right"></td> <td style="FONT-FAMILY: arial;" width="46"></td> <td style="FONT-FAMILY: arial;" width="12"></td> <td style="FONT-FAMILY: arial;" width="8" align="right"></td> <td style="FONT-FAMILY: arial;" width="67"></td> <td style="FONT-FAMILY: arial;" width="12"></td></tr> <tr style="padding:0;" valign="bottom"> <th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: arial;" align="left">(Dollars in millions)</th> <th style="FONT-FAMILY: arial;"> </th> <th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: arial;" colspan="2" align="center">June 30, 2013</th> <th style="FONT-FAMILY: arial;"> </th> <th style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: arial;" colspan="2" align="center">December 31, 2012</th> <th style="FONT-FAMILY: arial;"> </th></tr> <tr style="padding:0;" valign="bottom" bgcolor="#CCEEFF"> <td style="FONT-FAMILY: arial;"> Federal funds purchased and securities sold under repurchase agreements with weighted average interest rates of 0.07% and 0.96% at June 30, 2013 and December 31, 2012, respectively</td> <td style="FONT-FAMILY: arial;"> </td> <td style="FONT-FAMILY: arial;" align="right">$</td> <td style="FONT-FAMILY: arial;" align="right">137</td> <td style="FONT-FAMILY: arial;"> </td> <td style="FONT-FAMILY: arial;" align="right">$</td> <td style="FONT-FAMILY: arial;" align="right">123</td> <td style="FONT-FAMILY: arial;"> </td></tr> <tr style="padding:0;" valign="bottom" bgcolor="white"> <td style="FONT-FAMILY: arial;"> Commercial paper, with weighted average interest rates of 0.17% and 0.20% at June 30, 2013 and December 31, 2012, respectively</td> <td style="FONT-FAMILY: arial;"> </td> <td style="FONT-FAMILY: arial;"> </td> <td style="FONT-FAMILY: arial;" align="right">3,655</td> <td style="FONT-FAMILY: arial;"> </td> <td style="FONT-FAMILY: arial;"> </td> <td style="FONT-FAMILY: arial;" align="right">1,240</td> <td style="FONT-FAMILY: arial;"> </td></tr> <tr style="padding:0; FONT-SIZE: 1.5pt;" valign="top"> <td style="FONT-FAMILY: arial;" valign="bottom"> </td> <td style="FONT-FAMILY: arial;" valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: arial;" valign="bottom" colspan="2" align="right"> </td> <td style="FONT-FAMILY: arial;" valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 1pt solid; FONT-FAMILY: arial;" valign="bottom" colspan="2" align="right"> </td> <td style="FONT-FAMILY: arial;" valign="bottom"> </td></tr> <tr style="padding:0;" valign="bottom" bgcolor="#CCEEFF"> <td style="FONT-FAMILY: arial;"> Total commercial paper and other short-term borrowings</td> <td style="FONT-FAMILY: arial;"> </td> <td style="FONT-FAMILY: arial;" align="right">$</td> <td style="FONT-FAMILY: arial;" align="right">3,792</td> <td style="FONT-FAMILY: arial;"> </td> <td style="FONT-FAMILY: arial;" align="right">$</td> <td style="FONT-FAMILY: arial;" align="right">1,363</td> <td style="FONT-FAMILY: arial;"> </td></tr> <tr style="padding:0; FONT-SIZE: 1.5pt;" valign="top"> <td style="FONT-FAMILY: arial;" valign="bottom"> </td> <td style="FONT-FAMILY: arial;" valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 2.25pt double; FONT-FAMILY: arial;" valign="bottom" colspan="2" align="right"> </td> <td style="FONT-FAMILY: arial;" valign="bottom"> </td> <td style="BORDER-BOTTOM: #000000 2.25pt double; FONT-FAMILY: arial;" valign="bottom" colspan="2" align="right"> </td> <td style="FONT-FAMILY: arial;" valign="bottom"> </td></tr></table></div> </div> </div>falsefalsefalsenonnum:textBlockItemTypenaThe entire disclosure for short-term debt.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.13) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 13 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 false0Commercial Paper and Other Short-Term BorrowingsfalseCommercial Paper and Other Short-Term BorrowingsUnKnownUnKnownUnKnownUnKnowntruefalsefalseSheethttp://www.unionbank.com/role/Role_NotesToFinancialStatementsShortTermDebtTextBlock12