Fair Value Measurements - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions		Jul. 03, 2016	Jan. 03, 2016		Jun. 28, 2015	Dec. 28, 2014
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Estimated Fair Value	[1]	$ 12,046	$ 8,316	[2]
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		18,640	13,732		$ 10,639	$ 14,523
Marketable securities		23,944	$ 24,644
Held-to-maturity Securities
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount		30,266
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		2
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value		30,268
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		18,640
Marketable securities		11,626
Held-to-maturity Securities | Cash
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount		1,619
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		0
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value		1,619
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		1,619
Held-to-maturity Securities | U.S. Gov't Securities(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	6,548
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		1
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value	[3]	6,549
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	900
Marketable securities	[3]	5,648
Held-to-maturity Securities | Other Sovereign Securities(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	2,494
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		0
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value	[3]	2,494
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	1,359
Marketable securities	[3]	1,135
Held-to-maturity Securities | U.S. Reverse repurchase agreements(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	11,288
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		0
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value	[3]	11,288
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	9,587
Marketable securities	[3]	1,701
Held-to-maturity Securities | Other Reverse repurchase agreements(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	1,600
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		0
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value	[3]	1,600
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	1,600
Held-to-maturity Securities | Corporate debt securities(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	4,598
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		1
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value	[3]	4,599
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	1,456
Marketable securities	[3]	3,142
Held-to-maturity Securities | Money market funds
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount		882
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		0
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value		882
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		882
Held-to-maturity Securities | Time deposits(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	1,237
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain		0
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss		0
Held-to-maturity Securities - Estimated Fair Value	[3]	1,237
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	1,237
Available-for-sale Securities
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	11,891
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	439
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	(12)
Available-for-sale Securities - Estimated Fair Value	[4]	12,318
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[4]	0
Marketable securities	[4]	12,318
Available-for-sale Securities | U.S. Gov't Securities(1)
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	10,036
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	176
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	0
Available-for-sale Securities - Estimated Fair Value	[4]	10,212
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		0
Marketable securities	[4]	10,212
Available-for-sale Securities | Corporate debt securities(1)
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	1,818
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	17
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	(1)
Available-for-sale Securities - Estimated Fair Value	[4]	1,834
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		0
Marketable securities	[4]	1,834
Available-for-sale Securities | Equity investments
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	37
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	246
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	(11)
Available-for-sale Securities - Estimated Fair Value	[4]	272
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		0
Marketable securities	[4]	$ 272

[1] Classified as current marketable securities

[2] 2015 assets and liabilities are all classified as Level 2 with the exception of equity investments of $1,494 million, which are classified as Level 1.

[3] Held to maturity investments are reported at amortized cost and gains or losses are reported in earnings

[4] Available for sale securities are reported at fair value with unrealized gains and losses reported net of taxes in other comprehensive income.