Stockholders' Equity (Narrative) (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended	6 Months Ended
	Jul. 01, 2020	Jun. 30, 2020	Jun. 30, 2020
Stockholders' Equity Note [Abstract]
Dividends per common share (in dollars per share)		$ 0.24
Dividends recorded on common stock		$ 150
Class of Stock [Line Items]
Class B Common Stock purchased (shares)			1.3
Class B Common Stock purchased			$ 50
Average price per share repurchased (in dollars per share)			$ 38.63
Remaining authorization under repurchase program		$ 2,360	$ 2,360
Subsequent Event [Member]
Class of Stock [Line Items]
Dividends paid per common share (in dollars per share)	$ 0.24