Benefit Plans - Net Periodic Benefit Expense and Contributions for Defined Benefit Pension Plans and Other Postretirement Benefit Plans (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 05, 2015	Nov. 29, 2014	Dec. 05, 2015	Nov. 29, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 0	$ 0	$ 0	$ 0
Interest cost	24	28	81	94
Expected return on assets	(32)	(35)	(108)	(118)
Amortization of prior service benefit	0	0	0	0
Amortization of net actuarial loss	18	15	60	49
Pension settlement charge	0	63	0	63
Net periodic benefit expense (income)	10	71	33	88
Contributions to benefit plans	0	(47)	(27)	(114)
Other Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	1	1	3	3
Expected return on assets	0	0	0	0
Amortization of prior service benefit	(4)	(4)	(12)	(12)
Amortization of net actuarial loss	1	1	4	3
Pension settlement charge	0	0	0	0
Net periodic benefit expense (income)	(2)	(2)	(5)	(6)
Contributions to benefit plans	$ 0	$ 0	$ (11)	$ (1)