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Cash and Cash Equivalents and Short-term Investments | 6 Months Ended
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Jun. 30, 2021
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 instruments with initial maturities of three months or less. Short-term investments consist of money market funds. The estimated fair value of Cash and cash equivalents and Short-term investments approximates their carrying values. At June 30, 2021, Cash and cash equivalents and Short-term investments were $1,380 million compared to $1,192 million at December 31, 2020, an increase of $188 million. Of the total balances, $108 million and $102 million were restricted as to their use at June 30, 2021 and December 31, 2020. Included within Short-term investments as of June 30, 2021 and December 31, 2020, respectively, were £44.9 million ($62.3 million at June 30, 2021 exchange rates) and £44.4 million ($60.2 million at December 31, 2020 exchange rates) of operating funds required to be held by the Company in the U.K. by the Financial Conduct Authority (the “FCA”), a U.K.-based regulator.

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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 Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -URI http://asc.fasb.org/topic&trid=2196928 + Details
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