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Cash and Cash Equivalents and Short-term Investments | 3 Months Ended
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Mar. 31, 2014
Cash, Cash Equivalents, and Short-term Investments [Abstract] |
Cash and Cash Equivalents and Short-term Investments | Cash and Cash Equivalents and Short-term Investments Cash and cash equivalents include cash balances and all highly liquid investments with initial maturities of three months or less. Short-term investments include certificates of deposit, money market funds and highly liquid debt instruments purchased with initial maturities in excess of three months but less than one year and are carried at amortized cost, which approximates fair value. The Company is required to hold £77 million of operating funds in the U.K. by the Financial Conduct Authority, a U.K. based regulator, which were included in Short-term investments. These operating funds, when translated to U.S. dollars, were equal to $128 million and $126 million at March 31, 2014 and December 31, 2013, respectively. Cash and cash equivalents included restricted balances of $125 million and $88 million at March 31, 2014 and December 31, 2013, respectively. The restricted balances primarily relate to cash required to be held as collateral.

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- Definition The entire disclosure of the components of cash, cash equivalents, and short-term investments. Short-term investments may include current marketable securities. + References No definition available. + Details
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