Commitments - Schedule of Future Minimum Lease Payments under Non-Cancelable Operating and Capital Leases (Detail) (USD $) In Thousands, unless otherwise specified	Oct. 31, 2014	Apr. 10, 2014
Commitments and Contingencies Disclosure [Abstract]
Future minimum lease payments under non-cancelable capital leases, Remaining three months of fiscal 2015	$ 12,228
Future minimum lease payments under non-cancelable capital leases, Fiscal 2016	101,584
Future minimum lease payments under non-cancelable capital leases, Fiscal 2017	112,748
Future minimum lease payments under non-cancelable capital leases, Fiscal 2018	116,995
Future minimum lease payments under non-cancelable capital leases, Fiscal 2019	112,592
Future minimum lease payments under non-cancelable capital leases, Thereafter	201,292
Future minimum lease payments under non-cancelable capital leases, Total	657,439
Less: amount representing interest	(84,758)
Present value of capital lease obligations	572,681
Future minimum lease payments under non-cancelable operating leases, Remaining three months of fiscal 2015	64,901
Future minimum lease payments under non-cancelable operating leases, Fiscal 2016	259,691
Future minimum lease payments under non-cancelable operating leases, Fiscal 2017	233,260
Future minimum lease payments under non-cancelable operating leases, Fiscal 2018	190,736
Future minimum lease payments under non-cancelable operating leases, Fiscal 2019	181,184
Future minimum lease payments under non-cancelable operating leases, Thereafter	1,289,131
Future minimum lease payments under non-cancelable operating leases, Total	2,218,903	560,000
Financing Obligation, Building in Progress-Leased Facility, Remaining three months of fiscal 2015	0
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2016	1,777
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2017	16,877
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2018	21,107
Financing Obligation, Building in Progress-Leased Facility, Fiscal 2019	21,551
Financing Obligation, Building in Progress-Leased Facility, Thereafter	274,512
Financing Obligation, Building in Progress-Leased Facility	$ 335,824