Derivative Financial Instruments (Tables)

6 Months Ended

Sep. 29, 2013

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of outstanding commodity forward contracts

As of September 29, 2013, ATK had the following outstanding commodity forward contracts that were entered into to hedge forecasted purchases:

	Number of Pounds
Copper	22,861,000
Zinc	9,104,000

Schedule of fair value and location of derivative instruments designated as hedging instruments in the consolidated balance sheet

The table below presents the fair value and location of ATK's derivative instruments designated as hedging instruments in the consolidated balance sheet as of the periods presented.

		Asset Derivatives Fair value as of				Liability Derivatives Fair value as of
	Location	September 29, 2013		March 31, 2013		September 29, 2013		March 31, 2013
Commodity forward contracts	Other current assets / other accrued liabilities	$	160	$	—	$	6,266	$	2,871
Commodity forward contracts	Deferred charges and other non-current assets / other long term liabilities	—		—		—		659
Interest rate contracts	Deferred charges and other non-current assets / other long term liabilities	$	—	$	—	$	3,281	$	—
Total		$	160	$	—	$	9,547	$	3,530

Schedule of derivative gains and losses in the consolidated income statements related to commodity forward contracts and foreign currency forward contracts

For the periods presented below, the derivative gains and losses in the consolidated income statements related to commodity forward contracts, interest rate swaps, and foreign currency forward contracts were as follows:

	Pretax amount of gain (loss) reclassified from Accumulated Other Comprehensive Income (Loss)				Gain or (loss) recognized in income on derivative (ineffective portion and amount excluded from effectiveness testing)
	Location	Amount			Location	Amount
Quarter ended September 29, 2013
Commodity forward contracts	Cost of Sales	$	(642	)	Cost of Sales	$	—
Interest rate contracts	Interest expense	—			Interest expense	—
Foreign currency forward contracts	Cost of Sales	—			Cost of Sales	—
Quarter ended September 30, 2012
Commodity forward contracts	Cost of Sales	$	(2,518	)	Cost of Sales	$	—
Interest rate contracts	Interest expense	—			Interest expense	—
Foreign currency forward contracts	Cost of Sales	(30		)	Cost of Sales	—
Six months ended September 29, 2013
Commodity forward contracts	Cost of Sales	$	(1,608	)	Cost of Sales	$	(1,637	)
Interest rate contracts	Interest expense	—			Interest expense	—
Foreign currency forward contracts	Cost of Sales	—			Cost of Sales	—
Six months ended September 30, 2012
Commodity forward contracts	Cost of Sales	$	(3,962	)	Cost of Sales	$	—
Interest rate contracts	Interest expense	—			Interest expense	—
Foreign currency forward contracts	Cost of Sales	(30		)	Cost of Sales	—