Financial Instruments (Fair Values of Financial Assets and Liabilities) (Details) - USD ($) $ in Millions		Dec. 30, 2017	Dec. 31, 2016
Derivatives, Fair Value [Line Items]
Short-term Investments		$ 8,900	$ 6,967
Total asset derivatives at fair value	[1],[2]	136	182
Total liability derivatives at fair value	[1],[2]	410	529
Total Financial Assets at Fair Value	[1]	14,901	11,851
Total Financial Liabilities at Fair Value	[1]	913	1,001
Derivatives Designated As Cash Flow Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Assets, Total	[1]	17	53
Derivatives Designated As Cash Flow Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives designated as hedging instruments, Liabilities, Total	[1]	246	417
Derivatives Not Designated As Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Derivatives not designated as hedging instruments, Assets, Total	[1]	95	63
Derivatives Not Designated As Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivatives not designated as hedging instruments, Liabilities, Total	[1]	34	41
Assets [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	[1]	14,510	11,451
Liability [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	[1]	0	0
Cash and Cash Equivalents [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		5,800	4,600
Short-term Investments [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities		8,700	6,800
Fair Value, Inputs, Level 1 [Member] | Derivatives Designated As Cash Flow Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Commodity contracts - other	[1],[3]	0	0
Fair Value, Inputs, Level 1 [Member] | Derivatives Designated As Cash Flow Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Commodity contracts - other	[1],[3]	2	1
Fair Value, Inputs, Level 1 [Member] | Derivatives Not Designated As Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Commodity contracts - other	[1],[3]	0	1
Fair Value, Inputs, Level 1 [Member] | Derivatives Not Designated As Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Commodity contracts - other	[1],[3]	19	1
Fair Value, Inputs, Level 1 [Member] | Assets [Member]
Derivatives, Fair Value [Line Items]
Short-term Investments	[1],[4]	228	193
Fair Value, Inputs, Level 1 [Member] | Assets [Member] | Common Stock
Derivatives, Fair Value [Line Items]
Available-for-sale securities	[1],[5]	0	82
Fair Value, Inputs, Level 1 [Member] | Liability [Member]
Derivatives, Fair Value [Line Items]
Short-term Investments	[1],[4]	0	0
Fair Value, Inputs, Level 1 [Member] | Liability [Member] | Common Stock
Derivatives, Fair Value [Line Items]
Available-for-sale securities	[1],[5]	0	0
Fair Value, Inputs, Level 2 [Member] | Derivatives Designated As Fair Value Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Interest rate derivatives	[1],[6]	24	66
Fair Value, Inputs, Level 2 [Member] | Derivatives Designated As Fair Value Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Interest rate derivatives	[1],[6]	130	71
Fair Value, Inputs, Level 2 [Member] | Derivatives Designated As Cash Flow Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Forward exchange contracts	[1],[7]	15	51
Interest rate derivatives	[1],[7]	0	0
Commodity contracts - other	[1],[8]	2	2
Fair Value, Inputs, Level 2 [Member] | Derivatives Designated As Cash Flow Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Forward exchange contracts	[1],[7]	31	8
Interest rate derivatives	[1],[7]	213	408
Commodity contracts - other	[1],[8]	0	0
Fair Value, Inputs, Level 2 [Member] | Derivatives Not Designated As Hedging Instruments Assets [Member]
Derivatives, Fair Value [Line Items]
Forward exchange contracts	[1],[7]	10	2
Commodity contracts - other	[1],[8]	85	60
Fair Value, Inputs, Level 2 [Member] | Derivatives Not Designated As Hedging Instruments Liabilities [Member]
Derivatives, Fair Value [Line Items]
Forward exchange contracts	[1],[7]	3	15
Commodity contracts - other	[1],[8]	12	25
Fair Value, Inputs, Level 2 [Member] | Assets [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	[1],[9]	14,510	11,369
Fair Value, Inputs, Level 2 [Member] | Liability [Member]
Derivatives, Fair Value [Line Items]
Available-for-sale securities	[1],[9]	0	0
Fair Value, Inputs, Level 2 [Member] | Assets [Member]
Derivatives, Fair Value [Line Items]
Prepaid Forward Asset Fair Value	[1],[10]	27	25
Deferred compensation	[1],[11]	0	0
Fair Value, Inputs, Level 2 [Member] | Liability [Member]
Derivatives, Fair Value [Line Items]
Prepaid Forward Asset Fair Value	[1],[10]	0	0
Deferred compensation	[1],[11]	$ 503	$ 472

[1] Fair value hierarchy levels are defined in Note 7. Unless otherwise noted, financial assets are classified on our balance sheet within prepaid expenses and other current assets and other assets. Financial liabilities are classified on our balance sheet within accounts payable and other current liabilities and other liabilities.

[2] Unless otherwise noted, derivative assets and liabilities are presented on a gross basis on our balance sheet. Amounts subject to enforceable master netting arrangements or similar agreements which are not offset on the balance sheet as of December 30, 2017 and December 31, 2016 were not material. Collateral received against any of our asset positions was not material.

[3] Based on quoted contract prices on futures exchange markets.

[4] Based on the price of index funds. These investments are classified as short-term investments and are used to manage a portion of market risk arising from our deferred compensation liability.

[5] Based on the price of common stock. These equity securities were classified as investments in noncontrolled affiliates.

[6] Based on LIBOR forward rates.

[7] Based on recently reported market transactions of spot and forward rates.

[8] Based on recently reported market transactions of swap arrangements.

[9] Based on quoted broker prices or other significant inputs derived from or corroborated by observable market data. As of December 30, 2017, $5.8 billion and $8.7 billion of debt securities were classified as cash equivalents and short-term investments, respectively. As of December 31, 2016, $4.6 billion and $6.8 billion of debt securities were classified as cash equivalents and short-term investments, respectively. All of our available-for-sale debt securities have maturities of one year or less.

[10] Based primarily on the price of our common stock.

[11] Based on the fair value of investments corresponding to employees’ investment elections.