Financial Instruments (Outstanding Foreign Currency Forward And Swap Contracts) (Details) In Thousands																									6 Months Ended																																					6 Months Ended
	Sep. 30, 2011 USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] EUR [Member] Sell [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] EUR [Member] Sell [Member] EUR (€)	Sep. 30, 2011 Cash Flow Hedges [Member] Other [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] BRL [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] BRL [Member] Sell [Member] BRL	Sep. 30, 2011 Other Forward/Swap Contracts [Member] CAD [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] CAD [Member] Sell [Member] CAD	Sep. 30, 2011 Other Forward/Swap Contracts [Member] CNY [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] CNY [Member] Sell [Member] CNY	Sep. 30, 2011 Other Forward/Swap Contracts [Member] EUR [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] EUR [Member] Sell [Member] EUR (€)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] GBP [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] GBP [Member] Sell [Member] GBP (£)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] HUF [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] HUF [Member] Sell [Member] HUF	Sep. 30, 2011 Other Forward/Swap Contracts [Member] JPY [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] JPY [Member] Sell [Member] JPY (¥)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] MXN [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] MXN [Member] Sell [Member] MXN	Sep. 30, 2011 Other Forward/Swap Contracts [Member] MYR [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] MYR [Member] Sell [Member] MYR	Sep. 30, 2011 Other Forward/Swap Contracts [Member] SEK [Member] Sell [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] SEK [Member] Sell [Member] SEK	Sep. 30, 2011 Other Forward/Swap Contracts [Member] Other [Member] Sell [Member] USD ($)	Sep. 30, 2011 Sell [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] CNY [Member] Buy [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] CNY [Member] Buy [Member] CNY	Sep. 30, 2011 Cash Flow Hedges [Member] EUR [Member] Buy [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] EUR [Member] Buy [Member] EUR (€)	Sep. 30, 2011 Cash Flow Hedges [Member] HUF [Member] Buy [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] HUF [Member] Buy [Member] HUF	Sep. 30, 2011 Cash Flow Hedges [Member] ILS [Member] Buy [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] ILS [Member] Buy [Member] ILS	Sep. 30, 2011 Cash Flow Hedges [Member] MXN [Member] Buy [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] MXN [Member] Buy [Member] MXN	Sep. 30, 2011 Cash Flow Hedges [Member] MYR [Member] Buy [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] MYR [Member] Buy [Member] MYR	Sep. 30, 2011 Cash Flow Hedges [Member] SGD [Member] Buy [Member] USD ($)	Sep. 30, 2011 Cash Flow Hedges [Member] SGD [Member] Buy [Member] SGD	Sep. 30, 2011 Cash Flow Hedges [Member] Other [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] BRL [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] BRL [Member] Buy [Member] BRL	Sep. 30, 2011 Other Forward/Swap Contracts [Member] CAD [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] CAD [Member] Buy [Member] CAD	Sep. 30, 2011 Other Forward/Swap Contracts [Member] CNY [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] CNY [Member] Buy [Member] CNY	Sep. 30, 2011 Other Forward/Swap Contracts [Member] EUR [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] EUR [Member] Buy [Member] EUR (€)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] GBP [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] GBP [Member] Buy [Member] GBP (£)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] HUF [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] HUF [Member] Buy [Member] HUF	Sep. 30, 2011 Other Forward/Swap Contracts [Member] JPY [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] JPY [Member] Buy [Member] JPY (¥)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] MXN [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] MXN [Member] Buy [Member] MXN	Sep. 30, 2011 Other Forward/Swap Contracts [Member] MYR [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] MYR [Member] Buy [Member] MYR	Sep. 30, 2011 Other Forward/Swap Contracts [Member] SEK [Member] Buy [Member] USD ($)	Sep. 30, 2011 Other Forward/Swap Contracts [Member] SEK [Member] Buy [Member] SEK	Sep. 30, 2011 Other Forward/Swap Contracts [Member] Other [Member] Buy [Member] USD ($)	Sep. 30, 2011 Buy [Member] USD ($)
Derivatives, Fair Value [Line Items]
Total other forward/swap contracts notional contract value in USD																									$ 1,076,364																																					$ 1,485,467
Total cash flow hedges notional contract value in USD																										12,814																																					726,899
Notional Contract Value	3,300,000	7,944	5,777	4,870	30,866	56,700	96,480	95,947	328,000	2,101,848	297,622	216,210	52,932	33,832	34,947	7,489,200	38,205	2,934,642	25,239	340,410	7,765	24,680	107,671	725,093	56,637		220,402	1,409,800	57,729	42,371	52,977	11,353,000	49,751	185,100	109,931	1,482,700	128,162	407,350	47,952	62,035	59,995	19,434	35,700	44,945	44,984	347,900	2,244,777	327,088	239,240	24,656	15,634	42,634	9,136,500	79,355	6,084,846	66,175	892,540	51,655	164,180	348,700	2,361,373	132,925
Total Notional Contract Value In USD																										$ 1,089,178																																					$ 2,212,366