Subsequent Events (Details) (USD $)	0 Months Ended	3 Months Ended			9 Months Ended			1 Months Ended	6 Months Ended
	Apr. 25, 2014	Sep. 28, 2014	Jun. 29, 2014	Sep. 29, 2013	Sep. 28, 2014	Sep. 29, 2013	Sep. 28, 2014 Notes Due 2015 [Member] Senior Notes [Member]	Oct. 31, 2014 Notes Due 2015 [Member] Senior Notes [Member] Subsequent Event [Member]	Mar. 31, 2015 Scenario, Forecast [Member]	Mar. 31, 2015 Minimum [Member] Scenario, Forecast [Member]	Mar. 31, 2015 Maximum [Member] Scenario, Forecast [Member]
Subsequent Event [Line Items]
Principal amount repurchased								$ 20,400,000
Interest rate on debt							5.00%	5.00%
Estimated settlement acceptance rate, percent									50.00%
Estimated amount of pension obligations settled	24,000,000				9,500,000					200,000,000	225,000,000
Estimated noncash pension settlement charges		$ 0	$ (9,500,000)	$ 0	$ (9,525,000)	$ 0				$ (60,000,000)	$ (80,000,000)