Derivatives and Fair Value of Financial Instruments-Deferred Comp Securities (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Mar. 28, 2020	Jun. 27, 2020	Jun. 29, 2019	Dec. 31, 2019
Assets:
Trading securities		$ 1,178		$ 1,434
Investments
Amount invested		38	$ 9
Financial services company
Investments
Amount invested	$ 30
Commodities
Assets:
Derivative assets and liabilities, net basis		24		15
Domestic equity securities
Assets:
Trading securities		546		706
Domestic debt securities
Assets:
Trading securities		389		409
Foreign equity securities
Assets:
Trading securities		100		189
High yield securities
Assets:
Trading securities		46		56
Money market funds held in trading accounts
Assets:
Trading securities		24		12
Collateralized loan obligations
Assets:
Trading securities		14		15
Other trading securities
Assets:
Trading securities		5		4
Recurring basis | Level 1
Assets:
Total assets		861		1,095
Liabilities:
Total liabilities		2		4
Recurring basis | Level 1 | Commodities
Assets:
Derivatives		9		6
Liabilities:
Derivatives		2		4
Recurring basis | Level 1 | Domestic equity securities | Short-term investments
Assets:
Trading securities		546		706
Recurring basis | Level 1 | Domestic equity securities | Other current assets
Assets:
Trading securities		40		40
Recurring basis | Level 1 | Domestic debt securities | Short-term investments
Assets:
Trading securities		121		117
Recurring basis | Level 1 | Foreign equity securities | Short-term investments
Assets:
Trading securities		100		189
Recurring basis | Level 1 | Foreign equity securities | Other current assets
Assets:
Trading securities		2		3
Recurring basis | Level 1 | High yield securities | Short-term investments
Assets:
Trading securities		7		10
Recurring basis | Level 1 | Money market funds held in trading accounts | Short-term investments
Assets:
Trading securities		24		12
Recurring basis | Level 1 | Money market funds held in trading accounts | Other current assets
Assets:
Trading securities		6		6
Recurring basis | Level 1 | Other trading securities | Short-term investments
Assets:
Trading securities		4		4
Recurring basis | Level 1 | Fixed income securities | Other current assets
Assets:
Trading securities		2		2
Recurring basis | Level 2
Assets:
Total assets		376		396
Liabilities:
Total liabilities		3		3
Recurring basis | Level 2 | Interest rate swaps
Liabilities:
Derivatives		1
Recurring basis | Level 2 | Foreign currencies
Liabilities:
Derivatives		2		3
Recurring basis | Level 2 | Domestic debt securities | Short-term investments
Assets:
Trading securities		268		292
Recurring basis | Level 2 | Foreign debt securities | Short-term investments
Assets:
Trading securities		54		43
Recurring basis | Level 2 | High yield securities | Short-term investments
Assets:
Trading securities		39		46
Recurring basis | Level 2 | Collateralized loan obligations | Short-term investments
Assets:
Trading securities		14		15
Recurring basis | Level 2 | Other trading securities | Short-term investments
Assets:
Trading securities		1
Recurring basis | Level 3
Assets:
Total assets		29
Liabilities:
Contingent consideration		15		13
Total liabilities		15		13
Recurring basis | Level 3 | Long-term investments
Assets:
Long-term equity investment		29
Recurring basis | Fair Value
Assets:
Total assets		1,266		1,491
Liabilities:
Contingent consideration		15		13
Total liabilities		20		20
Recurring basis | Fair Value | Commodities
Assets:
Derivatives		9		6
Liabilities:
Derivatives		2		4
Recurring basis | Fair Value | Interest rate swaps
Liabilities:
Derivatives		1
Recurring basis | Fair Value | Foreign currencies
Liabilities:
Derivatives		2		3
Recurring basis | Fair Value | Long-term investments
Assets:
Long-term equity investment		29
Recurring basis | Fair Value | Domestic equity securities | Short-term investments
Assets:
Trading securities		546		706
Recurring basis | Fair Value | Domestic equity securities | Other current assets
Assets:
Trading securities		40		40
Recurring basis | Fair Value | Domestic debt securities | Short-term investments
Assets:
Trading securities		389		409
Recurring basis | Fair Value | Foreign equity securities | Short-term investments
Assets:
Trading securities		100		189
Recurring basis | Fair Value | Foreign equity securities | Other current assets
Assets:
Trading securities		2		3
Recurring basis | Fair Value | Foreign debt securities | Short-term investments
Assets:
Trading securities		54		43
Recurring basis | Fair Value | High yield securities | Short-term investments
Assets:
Trading securities		46		56
Recurring basis | Fair Value | Money market funds held in trading accounts | Short-term investments
Assets:
Trading securities		24		12
Recurring basis | Fair Value | Money market funds held in trading accounts | Other current assets
Assets:
Trading securities		6		6
Recurring basis | Fair Value | Collateralized loan obligations | Short-term investments
Assets:
Trading securities		14		15
Recurring basis | Fair Value | Other trading securities | Short-term investments
Assets:
Trading securities		5		4
Recurring basis | Fair Value | Fixed income securities | Other current assets
Assets:
Trading securities		$ 2		$ 2