Commitments And Contingencies (Tables)

3 Months Ended

Mar. 31, 2012

Commitments and Contingencies Disclosure [Abstract]

Schedule Of Repurchase Agreements

The following table summarizes the fair values of indemnified securities financing and related collateral, as well as collateral invested in indemnified repurchase agreements, as of the dates indicated:

(In millions)	March 31, 2012		December 31, 2011
Aggregate fair value of indemnified securities financing	$	323,429	$	302,342
Aggregate fair value of cash and securities held as collateral for indemnified securities financing	334,664		312,598
Aggregate fair value of collateral for indemnified securities financing invested in indemnified repurchase agreements	94,450		88,656
Aggregate fair value of cash and securities held by us or our agents as collateral for indemnified repurchase agreements	99,546		93,039