|
Commitments, Contingencies and Guarantees (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | ||
|---|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2014
|
Dec. 31, 2013
|
|
| Commitments and Contingencies Disclosure [Line Items] | |||
| Financial guarantees obtained | $ 18 | $ 20 | |
| Margin deposits contributed to Cantor Fitzgerald | 19 | ||
| Line of credit, outstanding amount | 11 | ||
| Voluntary accommodation program | 62 | ||
|
Clearinghouse Credit Facilities [Member]
|
|||
| Commitments and Contingencies Disclosure [Line Items] | |||
| Credit facilities, total | 311 | 312 | |
| Line of credit facility, available liquidity | 218 | 219 | |
| Credit facility, regulatory requirements amount | 93 | 93 | |
| Line of credit, outstanding amount | 0 | 11 | |
|
Escrow Agreement [Member]
|
|||
| Commitments and Contingencies Disclosure [Line Items] | |||
| Contingency, accrual | 11 | ||
|
Property Lease Guarantee [Member]
|
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| Commitments and Contingencies Disclosure [Line Items] | |||
| Other guarantees | 15 | 16 | |
|
Performance guarantees [Member]
|
|||
| Commitments and Contingencies Disclosure [Line Items] | |||
| Other guarantees | $ 2 | $ 2 |