Settlement Guarantee Management (Tables)

6 Months Ended

Mar. 31, 2019

Settlement Guarantee Management [Abstract]

Schedule of Customer Collateral

The Company maintains and regularly reviews global settlement risk policies and procedures to manage settlement exposure, which may require clients to post collateral if certain credit standards are not met. At March 31, 2019 and September 30, 2018, the Company held collateral as follows:

	March 31, 2019		September 30, 2018
	(in millions)
Cash equivalents	$	1,735	$	1,708
Pledged securities at market value	307		192
Letters of credit	1,337		1,382
Guarantees	574		860
Total	$	3,953	$	4,142