Benefit Plans - Estimated Future Benefit Payments to be Paid from Company's Defined Benefit Pension Plans and Other Postretirement Benefit Plans (Detail) (USD $) In Millions, unless otherwise specified	Feb. 22, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
2015	$ 115
2016	122
2017	128
2018	137
2019	147
Years 2020-2024	851
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
2015	6
2016	7
2017	6
2018	6
2019	6
Years 2020-2024	$ 31