1.0.0.3falseExpensesfalse1$falsefalseiso4217_USDStandardhttp://www.xbrl.org/2003/iso4217USDiso42170iso4217_USD_per_sharesDividehttp://www.xbrl.org/2003/iso4217USDiso4217http://www.xbrl.org/2003/instanceshares0sharesStandardhttp://www.xbrl.org/2003/instanceshares053stt_OtherOperatingExpensesTextBlocksttfalsenadurationstringOther Operating Expenses [Text Block]falsefalsefalsefalsefalsefalsefalsefalsefalse1falsefalse00<div>
<p style="MARGIN-TOP: 12px; MARGIN-BOTTOM: 0px"><font style="FONT-FAMILY: Times New Roman" size="2"><b>Note 20.    
Expenses</b></font></p>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">In
June 2009, the Staff of the SEC provided State Street Bank
with a “Wells” notice related to the SEC’s
ongoing investigation into disclosures and management by SSgA of
certain of its active fixed-income strategies during 2007 and prior
periods. Subsequent to the receipt of the Wells notice, we engaged
in discussions with the SEC and other governmental and regulatory
authorities regarding a potential settlement of this matter. Based
on such discussions during the fourth quarter of 2009, we
determined it appropriate to increase our reserve, initially
established in 2007 to address litigation exposure and other costs
associated with SSgA’s management of these fixed-income
strategies, by $250 million, to take into account such a potential
settlement with these governmental authorities and the other
ongoing litigation related to the active fixed-income strategies.
As a result, we recorded a provision of $250 million in our 2009
consolidated statement of income related to our estimate of this
legal exposure. We settled regulatory inquiries related to this
exposure in February 2010, which settlement is more fully described
in note 10.</font></p>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">During 2007 and
2008, the liquidity and pricing issues in the fixed-income
securities markets adversely affected the market value of the
securities in certain accounts managed by SSgA. These accounts,
which are offered to retirement plans, allow participants to
purchase and redeem units at a constant net asset value regardless
of volatility in the underlying value of the assets held by the
account. The accounts enter into contractual arrangements with
independent third-party financial institutions that agree to make
up any shortfall in the account if all the units are redeemed at
the constant net asset value. The financial institutions have the
right, under certain circumstances, to terminate this guarantee
with respect to future investments in the account.</font></p>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">During 2008, in
reaction to the aforementioned issues, the third-party guarantors
considered terminating their financial guarantees with the
accounts. Although we were not statutorily or contractually
obligated to do so, we elected to purchase approximately $2.49
billion of asset- and mortgage-backed securities from these
accounts that had been identified as presenting increased risk in
the then current market environment, which we classified in
investment securities available for sale in our consolidated
statement of condition, and to contribute an aggregate of $450
million to the accounts to improve the ratio of the market value of
the accounts’ portfolio holdings to the book value of the
accounts. Accordingly, we recorded a provision of $450 million in
our 2008 consolidated statement of income to provide for this
infusion.</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px"><font size="1"> </font></p>
<p style="MARGIN-TOP: 0px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">The components
of other expenses were as follows for the years ended
December 31,</font></p>
<p style="MARGIN-TOP: 0px; MARGIN-BOTTOM: 0px; FONT-SIZE: 12px">
 </p>
<table border="0" cellspacing="0" cellpadding="0" width="100%" align="center">
<tr>
<td width="79%"></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
<td valign="bottom" width="4%"></td>
<td></td>
<td></td>
</tr>
<tr>
<td valign="bottom" nowrap="nowrap"><font style="FONT-FAMILY: Times New Roman" size="1"><b>(In
millions)</b></font></td>
<td valign="bottom"><font size="1">  </font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2009</b></font></td>
<td valign="bottom"><font size="1">  </font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2008</b></font></td>
<td valign="bottom"><font size="1">  </font></td>
<td style="BORDER-BOTTOM: #000000 1px solid" valign="bottom" colspan="2" align="center"><font style="FONT-FAMILY: Times New Roman" size="1"><b>2007</b></font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Customer indemnification
obligation</font></p>
</td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">200</font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"></td>
<td valign="bottom"></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Securities
processing</font></p>
</td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>114</b></font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"> </font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">187</font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">79</font></td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Regulator fees and
assessments</font></p>
</td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b> </b></font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>71</b></font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"> </font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">45</font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"> </font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">3</font></td>
</tr>
<tr>
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Other</font></p>
</td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b> </b></font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>331</b></font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"> </font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">460</font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"> </font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">396</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td style="BORDER-TOP: #000000 1px solid" valign="bottom">
 </td>
<td style="BORDER-TOP: #000000 1px solid" valign="bottom">
 </td>
<td valign="bottom">  </td>
<td style="BORDER-TOP: #000000 1px solid" valign="bottom">
 </td>
<td style="BORDER-TOP: #000000 1px solid" valign="bottom">
 </td>
<td valign="bottom">  </td>
<td style="BORDER-TOP: #000000 1px solid" valign="bottom">
 </td>
<td style="BORDER-TOP: #000000 1px solid" valign="bottom">
 </td>
</tr>
<tr bgcolor="#CCEEFF">
<td valign="top">
<p style="TEXT-INDENT: -1em; MARGIN-LEFT: 1em"><font style="FONT-FAMILY: Times New Roman" size="2">Total other
expenses</font></p>
</td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2"><b>$</b></font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2"><b>516</b></font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">892</font></td>
<td valign="bottom"><font size="1">  </font></td>
<td valign="bottom"><font style="FONT-FAMILY: Times New Roman" size="2">$</font></td>
<td valign="bottom" align="right"><font style="FONT-FAMILY: Times New Roman" size="2">478</font></td>
</tr>
<tr style="FONT-SIZE: 1px">
<td valign="bottom"></td>
<td valign="bottom">  </td>
<td style="BORDER-TOP: #000000 3px double" valign="bottom">
 </td>
<td style="BORDER-TOP: #000000 3px double" valign="bottom">
 </td>
<td valign="bottom">  </td>
<td style="BORDER-TOP: #000000 3px double" valign="bottom">
 </td>
<td style="BORDER-TOP: #000000 3px double" valign="bottom">
 </td>
<td valign="bottom">  </td>
<td style="BORDER-TOP: #000000 3px double" valign="bottom">
 </td>
<td style="BORDER-TOP: #000000 3px double" valign="bottom">
 </td>
</tr>
</table>
<p style="MARGIN-TOP: 6px; TEXT-INDENT: 4%; MARGIN-BOTTOM: 0px">
<font style="FONT-FAMILY: Times New Roman" size="2">During the
third and fourth quarters of 2008, Lehman Brothers Holdings Inc.,
or Lehman, and certain of its affiliates filed for bankruptcy or
other insolvency proceedings. While we had no unsecured financial
exposure to Lehman or its affiliates, we indemnified certain
customers in connection with collateralized repurchase agreements
with Lehman entities. In the then current market environment, the
market value of the underlying collateral had declined. To the
extent that these declines resulted in collateral value falling
below the indemnification obligation, we recorded a balance sheet
reserve, and a corresponding provision, of $200 million in our 2008
consolidated statement of income to provide for our estimated net
exposure. The reserve was based on the cost of satisfying the
indemnification obligation net of the fair value of the collateral,
which we acquired subsequent to the Lehman proceedings. The
collateral, composed of commercial real estate loans which are
discussed in note 4, is recorded in loans and leases in our
consolidated statement of condition.</font></p>
</div>Note 20.    
Expenses
In
June 2009, the Staff of the SEC provided State Street Bank
with a “Wells” notice relatedfalsefalseOther Operating Expenses [Text Block]No authoritative reference available.falsefalse11falseUnKnownUnKnownUnKnownfalsetrue