Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Trade receivables, reserves	$ 35	$ 24
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)	1,083,423,094	1,080,564,947
Treasury stock, shares (in shares)	149,348,394	149,051,634
Current finance lease liabilities	$ 85	$ 42
Non-current finance lease liabilities	$ 504	$ 316