Other Financial Data (Tables)

12 Months Ended

Dec. 31, 2014

Other Financial Data [Abstract]

Other income (Expense)

Other income consists of the following (in millions):

Years ended December 31	2014			2013			2012
Equity earnings	$	12		$	20		$	13
Gain on investments	4			28			7
Gain on disposal of business	24			10			1
Foreign currency remeasurement gain (loss)	18			13			(19		)
Derivative (loss) gain	(19		)	(10		)	3
Other	5			7			(3		)
	$	44		$	68		$	2

Schedule of Allowance for Doubtful Accounts

An analysis of the allowance for doubtful accounts is as follows (in millions):

Years ended December 31,	2014			2013			2012
Balance at beginning of year	$	90		$	118		$	104
Provision charged to operations	12			9			45
Accounts written off, net of recoveries	(33		)	(38		)	(30		)
Effect of exchange rate changes	5			1			(1		)
Balance at end of year	$	74		$	90		$	118

Schedule of Other Current Assets

The components of Other current assets are as follows (in millions):

As of December 31	2014		2013
Taxes receivable	$	311	$	204
Prepaid expenses	164		229
Deferred project costs	102		98
Other	25		32
	$	602	$	563

Components of Fixed assets, net

The components of Fixed assets, net are as follows (in millions):

As of December 31	2014		2013
Software	$	1,020	$	997
Leasehold improvements	413		434
Computer equipment	347		341
Furniture, fixtures and equipment	313		323
Construction in progress	94		70
Other	124		124
	2,311		2,289
Less: Accumulated depreciation	1,546		1,498
Fixed assets, net	$	765	$	791

Schedule of Other Non-current Assets

The components of Other non-current assets are as follows (in millions):

As of December 31	2014		2013
Prepaid pension (1)	$	933	$	567
Deferred project costs	250		273
Taxes receivable	101		108
Other	233		282
	$	1,517	$	1,230

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(1) Increase in prepaid pensions is primarily due to actuarial changes and cash contributions made to the U.K. pension plans.

Schedule of Other Current Liabilities

The components of Other current liabilities are as follows (in millions):

As of December 31	2014		2013
Deferred revenue	$	408	$	475
Taxes payable	66		184
Other	314		247
	$	788	$	906

Schedule of Other Non-current Liabilities

The components of Other non-current liabilities are as follows (in millions):

As of December 31	2014		2013
Taxes payable	$	210	$	184
Leases	184		204
Deferred revenue	167		134
Compensation and benefits	57		105
Other	256		305
	$	874	$	932