Consolidated Condensed Balance Sheets (Parenthetical) - USD ($) shares in Thousands, $ in Millions	Oct. 01, 2021	Dec. 31, 2020
Allowance for doubtful accounts	$ 121	$ 132
Property, plant and equipment, net of accumulated depreciation	$ 3,390	$ 3,182
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	2,000,000	2,000,000
Common stock, shares issued	855,200	851,300
Common stock, shares outstanding	714,500	711,000
Preferred stock
Preferred stock, no par value	$ 0	$ 0
Preferred stock, shares authorized	15,000	15,000
Preferred stock series A | Preferred stock
Preferred stock, shares issued	1,650	1,650
Preferred stock, shares outstanding	1,650	1,650
Preferred stock, dividend rate, percent	4.75%	4.75%
Preferred stock series B | Preferred stock
Preferred stock, shares issued	1,720	1,720
Preferred stock, shares outstanding	1,720	1,720
Preferred stock, dividend rate, percent	5.00%	5.00%