Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Statement of Financial Position [Abstract]
Trade receivables, reserves	$ 24	$ 19
Preferred stock, par value (in dollars per share)	$ 1.00	$ 1.00
Preferred stock, shares outstanding (in shares)	100,000	100,000
Common stock, per share par value (in dollars per share)	$ 0.20	$ 0.20
Common stock, authorized shares (in shares)	1,500,000,000	1,500,000,000
Common stock, issued shares (in shares)	1,080,564,947	1,044,434,893
Treasury stock, shares (in shares)	149,051,634	150,323,151