Financial Instruments - Investments in Debt Securities (Detail) $ in Millions	Oct. 02, 2016 USD ($)
Total Debt Securities [Line Items]
Debt securities maturities within one year	$ 11,195
Debt securities maturities over 1 to 5 years	5,451
Debt securities maturities over 5 to 10 years	2,118
Debt securities maturities over 10 years	29
Total debt securities	18,792
Corporate debt [Member]
Total Debt Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	2,399	[1]
Available-for-sale debt securities maturities over 1 to 5 years	3,824	[1]
Available-for-sale debt securities maturities over 5 to 10 years	2,088	[1]
Available-for-sale debt securities maturities over 10 years	25	[1]
Available-for-sale debt securities maturities total	8,336	[1]
Western European, Asian, Scandinavian and other government debt [Member]
Total Debt Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	4,247	[2]
Available-for-sale debt securities maturities over 1 to 5 years	661	[2]
Available-for-sale debt securities maturities over 5 to 10 years	8	[2]
Available-for-sale debt securities maturities over 10 years	0	[2]
Available-for-sale debt securities maturities total	4,916	[2]
Federal Home Loan Mortgage Corporation and Federal National Mortgage Association asset-backed securities [Member]
Total Debt Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	3
Available-for-sale debt securities maturities over 1 to 5 years	56
Available-for-sale debt securities maturities over 5 to 10 years	1
Available-for-sale debt securities maturities over 10 years	0
Available-for-sale debt securities maturities total	61
U.S. government debt [Member]
Total Debt Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	702
Available-for-sale debt securities maturities over 1 to 5 years	93
Available-for-sale debt securities maturities over 5 to 10 years	0
Available-for-sale debt securities maturities over 10 years	0
Available-for-sale debt securities maturities total	795
Western European, Scandinavian and other government agency debt [Member]
Total Debt Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	1,245	[2]
Available-for-sale debt securities maturities over 1 to 5 years	137	[2]
Available-for-sale debt securities maturities over 5 to 10 years	0	[2]
Available-for-sale debt securities maturities over 10 years	0	[2]
Available-for-sale debt securities maturities total	1,383	[2]
Supranational debt [Member]
Total Debt Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	306	[2]
Available-for-sale debt securities maturities over 1 to 5 years	346	[2]
Available-for-sale debt securities maturities over 5 to 10 years	0	[2]
Available-for-sale debt securities maturities over 10 years	0	[2]
Available-for-sale debt securities maturities total	652	[2]
Other asset-backed debt [Member]
Total Debt Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	449	[3]
Available-for-sale debt securities maturities over 1 to 5 years	331	[3]
Available-for-sale debt securities maturities over 5 to 10 years	20	[3]
Available-for-sale debt securities maturities over 10 years	3	[3]
Available-for-sale debt securities maturities total	803	[3]
Government National Mortgage Association and other U.S. government guaranteed asset-back securities [Member]
Total Debt Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	575
Available-for-sale debt securities maturities over 1 to 5 years	1
Available-for-sale debt securities maturities over 5 to 10 years	0
Available-for-sale debt securities maturities over 10 years	0
Available-for-sale debt securities maturities total	576
Time deposits and other [Member]
Total Debt Securities [Line Items]
Held-to-maturity debt securities maturities within 1 year	1,046
Held-to-maturity debt securities with maturities over 1 to 5 years	1
Held-to-maturity debt securities maturities over 5 to 10 years	0
Held-to-maturity debt securities maturities over 10 years	0
Held-to-maturity debt securities maturities total	1,048
Western European government debt [Member]
Total Debt Securities [Line Items]
Held-to-maturity debt securities maturities within 1 year	222	[2]
Held-to-maturity debt securities with maturities over 1 to 5 years	0	[2]
Held-to-maturity debt securities maturities over 5 to 10 years	0	[2]
Held-to-maturity debt securities maturities over 10 years	0	[2]
Held-to-maturity debt securities maturities total	$ 222	[2]

[1] Issued by a diverse group of corporations, largely consisting of financial institutions, virtually all of which are investment-grade.

[2] Issued by governments, government agencies or supranational entities, as applicable, all of which are investment-grade.

[3] Includes loan-backed, receivable-backed, and mortgage-backed securities, all of which are investment-grade and in senior positions in the capital structure of the security. Loan-backed securities are collateralized by senior secured obligations of a diverse pool of companies or student loans, and receivable-backed securities are collateralized by credit cards receivables. Mortgage-backed securities are collateralized by diversified pools of residential and commercial mortgages. These securities are valued by third party models that use significant inputs derived from observable market data like prepayment rates, default rates, and recovery rates.