Retirement Plans (Schedule Of Future Cash Flows) (Details) (USD $)	6 Months Ended
	Sep. 27, 2015	Apr. 12, 2015
Defined Benefit Plan Disclosure [Line Items]
Minimum required contribution for retirement plans		$ 0
Defined Benefit Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions		7,543,000
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year	17,000,000
Postretirement Healthcare Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Net year-to-date contributions		570,000
Defined Benefit Plans, Estimated Future Employer Contributions in Current Fiscal Year	$ 700,000