Fair Value Measurements - Cash, Cash Equivalents and Marketable Securities (Details) - USD ($) $ in Millions		Oct. 02, 2016	Jan. 03, 2016		Sep. 27, 2015	Dec. 28, 2014
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Estimated Fair Value	[1]	$ 12,237	$ 8,316	[2]
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		18,205	13,732		$ 13,639	$ 14,523
Marketable securities		22,228	$ 24,644
Held-to-maturity Securities
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount		27,851
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		27,853
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		18,205
Marketable securities		9,646
Held-to-maturity Securities | Cash
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount		1,971
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		1,971
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		1,971
Held-to-maturity Securities | U.S. Gov't Securities(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	10,498
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]	10,499
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	6,997
Marketable securities	[3]	3,501
Held-to-maturity Securities | Other Sovereign Securities(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	3,385
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]	3,385
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	952
Marketable securities	[3]	2,433
Held-to-maturity Securities | U.S. Reverse repurchase agreements(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	5,883
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]	5,883
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	4,882
Marketable securities	[3]	1,001
Held-to-maturity Securities | Other Reverse repurchase agreements(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	96
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]	96
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	96
Held-to-maturity Securities | Corporate debt securities(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	3,501
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]	3,502
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	790
Marketable securities	[3]	2,711
Held-to-maturity Securities | Money market funds
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount		1,448
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		1,448
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		1,448
Held-to-maturity Securities | Time deposits(1)
Held-to-maturity Securities [Abstract]
Held-to-maturity Securities - Carrying Amount	[3]	1,069
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]	1,069
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[3]	1,069
Available-for-sale Securities
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	12,158
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	445
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	(21)
Available-for-sale Securities - Estimated Fair Value	[4]	12,582
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents	[4]	0
Marketable securities	[4]	12,582
Available-for-sale Securities | U.S. Gov't Securities(1)
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	10,235
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	120
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	(1)
Available-for-sale Securities - Estimated Fair Value	[4]	10,354
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		0
Marketable securities	[4]	10,354
Available-for-sale Securities | Other Sovereign Securities(1)
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	91
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	0
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	0
Available-for-sale Securities - Estimated Fair Value	[4]	91
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		0
Marketable securities	[4]	91
Available-for-sale Securities | Corporate debt securities(1)
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	1,782
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	11
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	(1)
Available-for-sale Securities - Estimated Fair Value	[4]	1,792
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		0
Marketable securities	[4]	1,792
Available-for-sale Securities | Equity investments
Available-for-sale Securities [Abstract]
Available-for-sale Securities - Carrying Amount	[4]	50
Available-for-sale Securities, Accumulated Gross Unrealized Gain, before Tax	[4]	314
Available-for-sale Securities, Accumulated Gross Unrealized Loss, before Tax	[4]	(19)
Available-for-sale Securities - Estimated Fair Value	[4]	345
Available-for-sale Securities and Held-to-maturity Securities [Abstract]
Cash and Cash Equivalents		0
Marketable securities	[4]	$ 345

[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.