Derivatives and Fair Value of Financial Instruments-Deferred Comp Securities (Details) - USD ($) $ in Millions	6 Months Ended
Jul. 01, 2017	Dec. 31, 2016
Assets and liabilities measured at fair value on a recurring basis and also its level within the fair value hierarchy
Transfers that occurred into or out of level 1	$ 0
Transfers that occurred into or out of level 2	0
Transfers that occurred into or out of level 3	0
Commodities
Assets:
Margin account	19	$ 10
Domestic equity securities
Assets:
Trading securities	687	482
Foreign equity securities
Assets:
Trading securities	289	199
Domestic debt securities held in mutual funds/ETFs/U.S. Treasuries
Assets:
Trading securities	274	437
High yield securities
Assets:
Trading securities	108	115
Money market funds held in trading accounts
Assets:
Trading securities	16	13
Collateralized loan obligation
Assets:
Trading securities	13	26
Other trading securities
Assets:
Trading securities	4	5
Recurring basis \| Fair Value
Assets:
Total Assets	1,451	1,321
Liabilities:
Liabilities	10	9
Recurring basis \| Fair Value \| Commodities
Assets:
Derivatives	10	3
Margin account	19	10
Liabilities:
Derivatives	7	1
Recurring basis \| Fair Value \| Interest rate swaps
Liabilities:
Derivatives	3	4
Recurring basis \| Fair Value \| Foreign currencies
Assets:
Derivatives	3	1
Liabilities:
Derivatives		4
Recurring basis \| Fair Value \| Other current assets \| Commodities
Assets:
Derivative assets and liabilities, net basis	22	12
Recurring basis \| Fair Value \| Domestic equity securities \| Short-term investments
Assets:
Trading securities	687	482
Recurring basis \| Fair Value \| Domestic equity securities \| Other current assets
Assets:
Trading securities	36	30
Recurring basis \| Fair Value \| Foreign equity securities \| Short-term investments
Assets:
Trading securities	289	199
Recurring basis \| Fair Value \| Foreign equity securities \| Other current assets
Assets:
Trading securities	4	3
Recurring basis \| Fair Value \| Domestic debt securities held in mutual funds/ETFs/U.S. Treasuries \| Short-term investments
Assets:
Trading securities	274	437
Recurring basis \| Fair Value \| High yield securities \| Short-term investments
Assets:
Trading securities	108	115
Recurring basis \| Fair Value \| Money market funds held in trading accounts \| Short-term investments
Assets:
Trading securities	16	13
Recurring basis \| Fair Value \| Collateralized loan obligation \| Short-term investments
Assets:
Trading securities	13	26
Recurring basis \| Fair Value \| Other trading securities \| Short-term investments
Assets:
Trading securities	4	5
Recurring basis \| Fair Value \| Other \| Other current assets
Assets:
Trading securities	3	4
Recurring basis \| Fair Value \| Fixed income mutual funds \| Other current assets
Assets:
Trading securities	4	3
Recurring basis \| Level 1
Assets:
Total Assets	1,344	1,194
Liabilities:
Liabilities	7	1
Recurring basis \| Level 1 \| Commodities
Assets:
Derivatives	10	3
Liabilities:
Derivatives	7	1
Recurring basis \| Level 1 \| Domestic equity securities \| Short-term investments
Assets:
Trading securities	687	482
Recurring basis \| Level 1 \| Domestic equity securities \| Other current assets
Assets:
Trading securities	36	30
Recurring basis \| Level 1 \| Foreign equity securities \| Short-term investments
Assets:
Trading securities	289	199
Recurring basis \| Level 1 \| Foreign equity securities \| Other current assets
Assets:
Trading securities	4	3
Recurring basis \| Level 1 \| Domestic debt securities held in mutual funds/ETFs/U.S. Treasuries \| Short-term investments
Assets:
Trading securities	273	437
Recurring basis \| Level 1 \| High yield securities \| Short-term investments
Assets:
Trading securities	19	15
Recurring basis \| Level 1 \| Money market funds held in trading accounts \| Short-term investments
Assets:
Trading securities	16	13
Recurring basis \| Level 1 \| Other trading securities \| Short-term investments
Assets:
Trading securities	4	5
Recurring basis \| Level 1 \| Other \| Other current assets
Assets:
Trading securities	2	4
Recurring basis \| Level 1 \| Fixed income mutual funds \| Other current assets
Assets:
Trading securities	4	3
Recurring basis \| Level 2
Assets:
Total Assets	107	127
Liabilities:
Liabilities	3	8
Recurring basis \| Level 2 \| Interest rate swaps
Liabilities:
Derivatives	3	4
Recurring basis \| Level 2 \| Foreign currencies
Assets:
Derivatives	3	1
Liabilities:
Derivatives		4
Recurring basis \| Level 2 \| Domestic debt securities held in mutual funds/ETFs/U.S. Treasuries \| Short-term investments
Assets:
Trading securities	1
Recurring basis \| Level 2 \| High yield securities \| Short-term investments
Assets:
Trading securities	89	100
Recurring basis \| Level 2 \| Collateralized loan obligation \| Short-term investments
Assets:
Trading securities	13	$ 26
Recurring basis \| Level 2 \| Other \| Other current assets
Assets:
Trading securities	$ 1

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