Derivatives and Fair Value of Financial Instruments-Deferred Comp Securities (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
Apr. 02, 2016	Dec. 31, 2015
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	$ 0
Transfers that occurred into or out of level 2	0	0
Transfers that occurred into or out of level 3	0	0
Commodities
Assets:
Margin account	23	29
Money market funds
Assets:
Available-for-sale securities	133	81
Domestic equity securities
Assets:
Trading securities	469	466
Domestic debt securities
Assets:
Trading securities	351	450
Foreign equity securities
Assets:
Trading securities	114	120
High yield trading debt securities
Assets:
Trading securities	93	104
Money market funds held in trading accounts
Assets:
Trading securities	17	22
Collateralized loan obligation
Assets:
Trading securities	8	10
Other trading securities
Assets:
Trading securities		1
Recurring basis \| Fair Value
Assets:
Total Assets	1,230	1,309
Liabilities:
Liabilities	29	24
Recurring basis \| Fair Value \| Commodities
Assets:
Derivatives	5	4
Margin account	23	29
Liabilities:
Derivatives	8	18
Recurring basis \| Fair Value \| Interest rate swaps
Liabilities:
Derivatives	7	6
Recurring basis \| Fair Value \| Foreign currencies
Assets:
Derivatives	2	8
Liabilities:
Derivatives	14
Recurring basis \| Fair Value \| Other current assets \| Commodities
Assets:
Derivative assets and liabilities, net basis	19	15
Recurring basis \| Fair Value \| Money market funds \| Short-term investments.
Assets:
Available-for-sale securities	133	81
Recurring basis \| Fair Value \| Domestic equity securities \| Short-term investments.
Assets:
Trading securities	469	466
Recurring basis \| Fair Value \| Domestic equity securities \| Other current assets
Assets:
Trading securities	29	31
Recurring basis \| Fair Value \| Domestic debt securities \| Short-term investments.
Assets:
Trading securities	351	450
Recurring basis \| Fair Value \| Foreign equity securities \| Short-term investments.
Assets:
Trading securities	114	120
Recurring basis \| Fair Value \| Foreign equity securities \| Other current assets
Assets:
Trading securities	4	5
Recurring basis \| Fair Value \| High yield trading debt securities \| Short-term investments.
Assets:
Trading securities	93	104
Recurring basis \| Fair Value \| Money market funds held in trading accounts \| Short-term investments.
Assets:
Trading securities	17	22
Recurring basis \| Fair Value \| Collateralized loan obligation \| Short-term investments.
Assets:
Trading securities	8	10
Recurring basis \| Fair Value \| Other \| Other current assets
Assets:
Trading securities	2	3
Recurring basis \| Fair Value \| Other trading securities \| Short-term investments.
Assets:
Trading securities		1
Recurring basis \| Fair Value \| Fixed income mutual funds \| Other current assets
Assets:
Trading securities	3	4
Recurring basis \| Level 1
Assets:
Total Assets	1,127	1,185
Liabilities:
Liabilities	8	18
Recurring basis \| Level 1 \| Commodities
Assets:
Derivatives	5	4
Liabilities:
Derivatives	8	18
Recurring basis \| Level 1 \| Money market funds \| Short-term investments.
Assets:
Available-for-sale securities	133	81
Recurring basis \| Level 1 \| Domestic equity securities \| Short-term investments.
Assets:
Trading securities	469	466
Recurring basis \| Level 1 \| Domestic equity securities \| Other current assets
Assets:
Trading securities	29	31
Recurring basis \| Level 1 \| Domestic debt securities \| Short-term investments.
Assets:
Trading securities	351	450
Recurring basis \| Level 1 \| Foreign equity securities \| Short-term investments.
Assets:
Trading securities	114	120
Recurring basis \| Level 1 \| Foreign equity securities \| Other current assets
Assets:
Trading securities	4	5
Recurring basis \| Level 1 \| Money market funds held in trading accounts \| Short-term investments.
Assets:
Trading securities	17	22
Recurring basis \| Level 1 \| Other \| Other current assets
Assets:
Trading securities	2	2
Recurring basis \| Level 1 \| Fixed income mutual funds \| Other current assets
Assets:
Trading securities	3	4
Recurring basis \| Level 2
Assets:
Total Assets	103	124
Liabilities:
Liabilities	21	6
Recurring basis \| Level 2 \| Interest rate swaps
Liabilities:
Derivatives	7	6
Recurring basis \| Level 2 \| Foreign currencies
Assets:
Derivatives	2	8
Liabilities:
Derivatives	14
Recurring basis \| Level 2 \| High yield trading debt securities \| Short-term investments.
Assets:
Trading securities	93	104
Recurring basis \| Level 2 \| Collateralized loan obligation \| Short-term investments.
Assets:
Trading securities	$ 8	10
Recurring basis \| Level 2 \| Other \| Other current assets
Assets:
Trading securities		1
Recurring basis \| Level 2 \| Other trading securities \| Short-term investments.
Assets:
Trading securities		$ 1

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