Settlement Guarantee Management (Tables)

6 Months Ended

Mar. 31, 2013

Settlement Guarantee Management [Abstract]

Schedule of Customer Collateral

The Company maintained collateral as follows:

	March 31, 2013		September 30, 2012
	(in millions)
Cash equivalents	$	846	$	823
Pledged securities at market value	260		307
Letters of credit	1,091		1,084
Guarantees	1,940		2,022
Total	$	4,137	$	4,236