Financial Instruments (Tables)

3 Months Ended

Jun. 30, 2012

Financial Instruments [Abstract]

Input levels and valuation techniques for determination of fair values of Financial Instruments

	Fair Value Measurements at Reporting Date Using
June 30, 2012	Total		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Valuation Technique
			(In millions)
Assets
Cash equivalents
Money-market funds	$	596.3	$	596.3	$	—	$	—		A
United States Treasury securities		250.0		250.0		—		—		A
Short-term and long-term investments
United States Treasury securities		144.2		144.2		—		—		A
Auction rate securities		18.7		—		—		18.7		B
Mutual funds		19.8		19.8		—		—		A
Foreign currency forward contracts		0.9		—		0.9		—		A
Total	$	1,029.9	$	1,010.3	$	0.9	$	18.7
Liabilities
Foreign currency forward contracts	$	5.3	$	—	$	5.3	$	—		A
Total	$	5.3	$	—	$	5.3	$	—

Summary of activity in Level 3 financial instruments

	Quarter Ended June 30,
	2012			2011
	(In millions)
Balance at the beginning of the period	$	26.9		$	27.2
Redemption and sales of auction rate securities		(7.6	)		(0.2	)
Change in unrealized loss included in other comprehensive income		(0.6	)		(0.2	)
Balance at the end of the period	$	18.7		$	26.8

Components of cash, cash equivalents and investments

	June 30, 2012						March 31, 2012
	Cash and Cash Equivalents		Short-term Investments		Long-term Investments		Cash and Cash Equivalents		Short-term Investments		Long-term Investments
					(In millions)
Measured at fair value:
Available-for-sale
United States Treasury securities	$	250.0	$	138.1	$	6.1	$	49.9	$	86.1	$	6.1
Auction rate securities		—		—		18.7		—		—		26.9
Trading
Mutual funds		—		—		19.8		—		—		19.6
Total debt and equity investments measured at fair value		250.0		138.1		44.6		49.9		86.1		52.6
Cash on hand		559.4		—		—		632.6		—		—
Certificates of deposit		59.8		—		—		45.1		—		—
Money-market funds		596.3		—		—		769.3		—		—
Total cash, cash equivalents and investments	$	1,465.5	$	138.1	$	44.6	$	1,496.9	$	86.1	$	52.6
Amounts included in accumulated other comprehensive income from available-for-sale securities (pre-tax):
Unrealized losses*	$	—	$	—	$	3.0	$	—	$	—	$	2.4

* The unrealized losses on available-for-sale securities at June 30, 2012 and March 31, 2012 relate to the auction rate securities.

Contract maturities of available for sale investments in debt securities

	Cost		Fair Value
	(In millions)
Due in one year or less	$	388.1	$	388.1
Due between one and two years		6.1		6.1
Due after ten years		21.7		18.7
Total	$	415.9	$	412.9

Notional amounts at contract exchange rates of foreign currency forward contracts

	Notional Amount
	June 30, 2012		March 31, 2012
	(In millions)
Foreign Currency Forward Contracts (receive United States dollar/pay foreign currency)
Euro	$	125.4	$	214.2
Australian dollar		22.9		29.9
Chinese yuan renminbi		12.7		11.7
Swedish krona		6.5		8.2
Swiss franc		4.3		6.8
Singapore dollar		4.1		3.8
Brazilian real		3.8		8.7
Danish krone		3.4		3.9
New Zealand dollar		3.2		3.4
South Korean won		2.7		2.6
Mexican peso		0.1		3.2
British pound		—		19.2
Other		3.9		6.4
Total	$	193.0	$	322.0
Foreign Currency Forward Contracts (pay United States dollar/receive foreign currency)
Israeli shekel	$	170.5	$	158.2
Indian rupee		10.8		15.0
British pound		4.2		—
Other		—		4.8
Total	$	185.5	$	178.0

Finance receivables balance, net of allowance, by region and by class of internal credit rating

	North America		EMEA		Asia Pacific		Latin America		Total
					(In millions)
Class 1	$	48.3	$	29.8	$	11.5	$	1.1	$	90.7
Class 2		4.1		11.6		4.1		3.7		23.5
Class 3		0.1		—		0.3		1.0		1.4
Balance at the end of the period	$	52.5	$	41.4	$	15.9	$	5.8	$	115.6