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Investments (Details)
In Millions, unless otherwise specified |
3 Months Ended | 3 Months Ended | 3 Months Ended | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
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Mar. 31, 2013
USD ($)
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Dec. 31, 2012
USD ($)
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Mar. 31, 2013
LCH [Member]
EUR (€)
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Aug. 31, 2012
LCH [Member]
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Mar. 31, 2013
Investment In Dubai Financial Market PJSC [Member]
USD ($)
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Dec. 31, 2012
Investment In Dubai Financial Market PJSC [Member]
USD ($)
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Mar. 31, 2013
Foreign Government Debt Securities [Member]
USD ($)
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Dec. 31, 2012
Foreign Government Debt Securities [Member]
USD ($)
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Mar. 31, 2012
EMCF [Member]
USD ($)
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Mar. 31, 2013
EuroCCP [Member]
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| Investments, Debt and Securities [Line Items] | ||||||||||
| Trading securities | $ 195 | $ 201 | $ 141 | $ 134 | ||||||
| Available for sale security, percentage of investment owned | 1.00% | |||||||||
| Available for sale, cost basis | 18 | 18 | ||||||||
| Available for sale, fair value | 23 | 22 | ||||||||
| Unrealized Holding Gains on Available-For-Sale Investment Securities | 5 | |||||||||
| Equity method investments | 13 | 13 | ||||||||
| Expected ownership percentage | 25.00% | |||||||||
| Other than temporary impairment | 12 | |||||||||
| Pro forma ownership | 3.70% | |||||||||
| Carrying cost of Investment | 37 | 37 | ||||||||
| Ownership percentage after capital raise | 5.00% | |||||||||
| Expected cash payment for increase in ownership interest after capital raise | € 21 | |||||||||
| X | ||||||||||
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- Definition
Available for sale security, percentage of investment owned No definition available.
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| X | ||||||||||
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- Definition
Business Acquisition Percentage Of Shares Owned By Company No definition available.
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| X | ||||||||||
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- Definition
Equity Method Investment Expected Ownership Percentage No definition available.
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| X | ||||||||||
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- Definition
Expected cash payment for increase in ownership interest after capital raise No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Ownership percentage after capital raise No definition available.
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| X | ||||||||||
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- Definition
Accumulated appreciation or loss, net of tax, in value of the total of available-for-sale securities at the end of an accounting period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the aggregate carrying amount of all cost-method investments as reported on or included in the balance sheet. The original cost of the investments may differ from the aggregate carrying amount disclosed due to various adjustments such as: (i) dividends received in excess of earnings after the date of investment that are considered a return of investment and therefore recorded as reductions to cost of the investment, or (ii) a series of operating losses of an investee or other factors which may indicate that a decrease in value of the investment has occurred which is other than temporary and accordingly such decrease in value has been recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents an other than temporary decline in value that has been recognized against an investment accounted for under the equity method of accounting. The excess of the carrying amount over the fair value of the investment represents the amount of the write down which is or was reflected in earnings. The written down value is a new cost basis with the adjusted value of the investment becoming its new carrying value subject to the equity accounting method. Evidence of a loss in value might include, but would not necessarily be limited to, absence of an ability to recover the carrying amount of the investment or inability of the investee to sustain an earnings capacity which would justify the carrying amount of the investment. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The total of financial instruments that are bought and held principally for the purpose of selling them in the near term (thus held for only a short period of time) or for debt and equity securities formerly categorized as available-for-sale or held-to-maturity which the entity held as of the date it opted to account for such securities at fair value. An enterprise may also categorize such a security as trading without the intent to sell it in the near term assuming the decision to categorize the security as trading occurred at acquisition. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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