Funds Receivable And Customer Accounts, Designated For Credit Funding

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- Definition

Funds Receivable And Customer Accounts, Designated For Credit Funding, Percentage

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- Definition

Funds Receivable And Funds Payable, Transaction Clearing Period

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- Definition

Regulatory Requirement, Minimum Aggregate Customer Balances Covered By Eligible Liquid Assets Held, Percentage

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Overview and Summary of Significant Accounting Policies - Customer Accounts (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Mar. 31, 2016
Accounts, Notes, Loans and Financing Receivable [Line Items]
Minimum aggregate customer balances required to be covered by eligible liquid assets held, percentage	100.00%
Europe
Accounts, Notes, Loans and Financing Receivable [Line Items]
Funds receivable and customer accounts designated for credit funding, percentage	30.00%
U.S. \| Minimum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Funds receivable and funds payable, transaction clearing period	1 day
U.S. \| Maximum
Accounts, Notes, Loans and Financing Receivable [Line Items]
Funds receivable and funds payable, transaction clearing period	3 days
Other countries
Accounts, Notes, Loans and Financing Receivable [Line Items]
Funds receivable and funds payable, transaction clearing period	5 days
Cash and cash equivalents \| Europe
Accounts, Notes, Loans and Financing Receivable [Line Items]
Funds receivable and customer accounts designated for credit funding	$ 700	$ 800