Fair Value Measurements and Investments (Tables)

12 Months Ended

Sep. 30, 2015

Assets and Liabilities Measured at Fair Value on a Recurring Basis



	Fair Value Measurements at September 30 Using Inputs Considered as
	Level 1				Level 2				Level 3
	2015		2014		2015		2014		2015		2014
	(in millions)
Assets
Cash equivalents and restricted cash:
Money market funds	$	3,051	$	2,277
U.S. government-sponsored debt securities					$	280	$	—
Commercial paper					—		37
Investment securities, trading:
Equity securities	66		69
Investment securities, available-for-sale:
U.S. government-sponsored debt securities					2,615		2,162
U.S. Treasury securities	2,656		2,176
Equity securities	4		58
Corporate debt securities					533		522
Auction rate securities									$	7	$	7
Prepaid and other current assets:
Foreign exchange derivative instruments					76		40
Total	$	5,777	$	4,580	$	3,504	$	2,761	$	7	$	7
Liabilities
Accrued liabilities:
Visa Europe put option									$	255	$	145
Foreign exchange derivative instruments					$	13	$	6
Total	$	—	$	—	$	13	$	6	$	255	$	145

The amortized cost, unrealized gains and losses and fair value of available-for-sale investment securities are as follows:



	September 30, 2015									September 30, 2014
	Amortized Cost		Gross Unrealized				Fair Value			Amortized Cost		Gross Unrealized				Fair Value
	Amortized Cost		Gains		Losses		Fair Value			Amortized Cost		Gains		Losses		Fair Value
	(in millions)
U.S. government-sponsored debt securities	$	2,612	$	3	$	—	$	2,615		$	2,160	$	2	$	—	$	2,162
U.S. Treasury securities	2,652		4		—		2,656			2,174		2		—		2,176
Equity securities	4		—		—		4			15		43		—		58
Corporate debt securities	533		—		—		533			521		1		—		522
Auction rate securities	7		—		—		7			7		—		—		7
Total	$	5,808	$	7	$	—	$	5,815		$	4,877	$	48	$	—	$	4,925
Less: current portion of available-for-sale investment securities							(2,431		)							(1,910		)
Long-term available-for-sale investment securities							$	3,384								$	3,015



	Amortized Cost		Fair Value
	(in millions)
September 30, 2015:
Due within one year	$	2,424	$	2,427
Due after 1 year through 5 years	3,373		3,377
Due after 5 years through 10 years	—		—
Due after 10 years	7		7
Total	$	5,804	$	5,811

Investment income is recorded as non-operating income in the Company's consolidated statements of operations and consisted of the following:



	For the Years Ended September 30,
	2015			2014			2013
	(in millions)
Interest and dividend income on cash and investments	$	31		$	25		$	27
Gain on other investments	3			8			5
Investment securities, trading:
Unrealized (losses) gains, net	(6		)	(2		)	4
Realized gains, net	2			6			2
Investment securities, available-for-sale:
Realized gains (losses), net	21			1			(1		)
Other-than-temporary impairment on investments	(5		)	(3		)	(15		)
Investment income	$	46		$	35		$	22