Composition of Certain Financial Statement Captions (Schedule of Certain Financial Statement Captions) (Detail) - USD ($) $ in Millions	11 Months Ended		12 Months Ended
	Jan. 01, 2016	Jan. 02, 2015	Jan. 30, 2015	Jan. 31, 2014
Inventory, prepaid expenses and other current assets:
Prepaid income taxes and tax refunds receivable	$ 56		$ 102
Inventories	70		70
Restricted cash	17		30
Prepaid expenses	26		28
Deferred income taxes	0		12
Other	47		31
Total inventory, prepaid expenses and other current assets	216		273
Accounts payable and accrued liabilities:
Accrued liabilities	322		327
Accounts payable	314		244
Collections in excess of revenues on uncompleted contracts and deferred revenue	133		104
Total accounts payable and accrued liabilities	769		675
Accrued payroll and employee benefits:
Salaries, bonuses and amounts withheld from employees’ compensation	142		138
Accrued vacation	121		123
Accrued contributions to employee benefit plans	5		3
Total Accrued payroll and employee benefits	268		264
Other long-term liabilities:
Deferred compensation	41		39
Lease related obligations	35		31
Deferred tax liabilities	34		21
Accrued pension liabilities	0		8
Liabilities for uncertain tax positions	5		6	$ 12
Other	68		63
Total other long-term liabilities	183		168
Other income (expense), net
Gain on sale of former headquarters	82		0	0
Other income (expense), net	2		5	(8)
Other income (expense), net	$ 84	$ 5	$ 5	$ (8)