Financial Instruments - Investments in Debt Securities (Detail) (USD $) In Millions, unless otherwise specified	Jun. 29, 2014
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Debt securities maturities within 1 year	$ 30,604
Debt securities maturities over 1 to 5 years	12,375
Debt securities maturities over 5 to 10 years	1,614
Debt securities maturities after 10 years	597
Total debt securities	45,190
Western European, Japanese and other government debt [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	12,844	[1]
Available-for-sale debt securities maturities over 1 to 5 years	2,406	[1]
Available-for-sale debt securities maturities over 5 to 10 years	0	[1]
Available-for-sale debt securities maturities over 10 years	1	[1]
Available-for-sale debt securities maturities total	15,251	[1]
Corporate debt [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	2,306	[2]
Available-for-sale debt securities maturities over 1 to 5 years	5,018	[2]
Available-for-sale debt securities maturities over 5 to 10 years	1,581	[2]
Available-for-sale debt securities maturities over 10 years	265	[2]
Available-for-sale debt securities maturities total	9,170	[2]
U.S. government debt [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	2,151
Available-for-sale debt securities maturities over 1 to 5 years	782
Available-for-sale debt securities maturities over 5 to 10 years	10
Available-for-sale debt securities maturities over 10 years	0
Available-for-sale debt securities maturities total	2,943
Western European, Scandinavian, Australian and Other Government Agency Debt [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	1,965	[1]
Available-for-sale debt securities maturities over 1 to 5 years	367	[1]
Available-for-sale debt securities maturities over 5 to 10 years	0	[1]
Available-for-sale debt securities maturities over 10 years	0	[1]
Available-for-sale debt securities maturities total	2,332	[1]
Federal Home Loan Mortgage Corporation and Federal National Mortgage Association asset-backed securities [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	0
Available-for-sale debt securities maturities over 1 to 5 years	1,924
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	1,924
Reverse repurchase agreements [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	1,767	[3]
Available-for-sale debt securities maturities over 1 to 5 years	0	[3]
Available-for-sale debt securities maturities over 5 to 10 years	0	[3]
Available-for-sale debt securities maturities over 10 years	0	[3]
Available-for-sale debt securities maturities total	1,767	[3]
Supranational Debt [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	638	[3]
Available-for-sale debt securities maturities over 1 to 5 years	1,040	[3]
Available-for-sale debt securities maturities over 5 to 10 years	0	[3]
Available-for-sale debt securities maturities over 10 years	0	[3]
Available-for-sale debt securities maturities total	1,678	[3]
Government National Mortgage Association and other U.S. government guaranteed asset-back securities [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Available-for-sale debt securities maturities within 1 year	18
Available-for-sale debt securities maturities over 1 to 5 years	775
Available-for-sale debt securities maturities over 5 to 10 years	0
Available-for-sale debt securities maturities over 10 years	331
Available-for-sale debt securities maturities total	1,124
Western European Scandinavian and other government agency debt [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Held-to-maturity debt securities maturities within 1 year	5,547	[1]
Held-to-maturity debt securities with maturities over 1 to 5 years	0	[1]
Held-to-maturity debt securities maturities over 5 to 10 years	0	[1]
Held-to-maturity debt securities maturities over 10 years	0	[1]
Held-to-maturity debt securities maturities total	5,547	[1]
Western European, Scandinavian and other government agency debt, time deposits and other [Member] | Certificates of deposit and other [Member]
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]
Held-to-maturity debt securities maturities within 1 year	3,368	[1]
Held-to-maturity debt securities with maturities over 1 to 5 years	63	[1]
Held-to-maturity debt securities maturities over 5 to 10 years	23	[1]
Held-to-maturity debt securities maturities over 10 years	0	[1]
Held-to-maturity debt securities maturities total	$ 3,454	[1]

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

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

[3] Involving U.S. securities.