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Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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Accumulated Other Comprehensive Income (Loss) Components of Net of Tax (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013	Dec. 31, 2012
Accumulated Other Comprehensive Income (Loss) Components, Net of Tax [Roll Forward]
Balance as of March 31, 2013			$ (22,680)
Foreign currency translation	(3,325)	(1,068)	(5,530)	462
Unrealized net loss on investments	(1,485)	11,794	(28,237)	19,991
Change in fair value of cash flow hedges	2,727	2,634	10,255	2,791
Amount reclassified from AOCI			12,832	14,828
Balance as of December 31, 2013	(46,192)		(46,192)
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss) Components, Net of Tax [Roll Forward]
Balance as of March 31, 2013			(22,680)
Foreign currency translation			(5,530)
Unrealized net loss on investments			(28,237)
Change in fair value of cash flow hedges			(2,577)
Amount reclassified from AOCI			12,832
Other comprehensive income (loss)			(23,512)
Balance as of December 31, 2013	(46,192)		(46,192)
Foreign Currency Translation
Accumulated Other Comprehensive Income (Loss) Components, Net of Tax [Roll Forward]
Balance as of March 31, 2013			(30,153)
Foreign currency translation			(5,530)
Other comprehensive income (loss)			(5,530)
Balance as of December 31, 2013	(35,683)		(35,683)
Unrealized Gain (Loss) on Investments
Accumulated Other Comprehensive Income (Loss) Components, Net of Tax [Roll Forward]
Balance as of March 31, 2013			39,645
Unrealized net loss on investments			(28,237)
Other comprehensive income (loss)			(28,237)
Balance as of December 31, 2013	11,408		11,408
Fair Market Value of Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss) Components, Net of Tax [Roll Forward]
Balance as of March 31, 2013			(32,298)
Change in fair value of cash flow hedges			(2,577)
Amount reclassified from AOCI			12,832
Other comprehensive income (loss)			10,255
Balance as of December 31, 2013	(22,043)		(22,043)
Postretirement Benefit Obligation Gain
Accumulated Other Comprehensive Income (Loss) Components, Net of Tax [Roll Forward]
Balance as of March 31, 2013			126
Other comprehensive income (loss)			0
Balance as of December 31, 2013	$ 126		$ 126