Other Current Assets

3 Months Ended

Mar. 31, 2013

Other Current Assets [Abstract]

Other Current Assets

4. Other Current Assets

(in $ millions)	March 31, 2013		December 31, 2012
Restricted cash of subsidiaries		86		56
Development advances		72		68
Sales and use tax receivables		45		48
Prepaid expenses		20		15
Assets held for sale		16		16
Derivative assets		3		10
Other		10		7
		252		220

Restricted cash of subsidiaries represents cash held on behalf of clients for a short period of time before being transferred to travel industry partners. A compensating balance is held in accrued expenses and other current liabilities as customer prepayments.

Assets held for sale consisted of land and buildings expected to be sold within the next twelve months.