Debt - Additional Information (Detail) (USD $)	3 Months Ended
	Apr. 03, 2015	Jan. 09, 2014
Debt Instrument [Line Items]
Total unsecured loan under credit facility	$ 4,000,000,000
Line of credit facility additional borrowing capacity	1,000,000,000.0
Period of Term Loan Facility	5 years
Interest rate of borrowing under credit facility	1.68%
Remaining outstanding balance term loan facility	2,300,000,000.0	1,800,000,000.0
Sublimit for Letters of Credit Under Revolving Credit Facility	100,000,000
Sublimit for Swing Line Loans Under Revolving Credit Facility	50,000,000
Long-term Debt, Maturities, Repayments of Principal, Remainder of Fiscal Year	31,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Two	156,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Three	219,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Four	250,000,000
Long-term Debt, Maturities, Repayments of Principal in Year Five	1,700,000,000
Term loan facility [Member]
Debt Instrument [Line Items]
Total unsecured loan under credit facility	2,500,000,000.0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit facility revolving loan	$ 1,500,000,000.0