CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (PARENTHETICAL) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 20	$ 19
Accumulated depreciation	$ 2,447	$ 2,297
Common stock, par value (in dollars per share)	$ 0.01
Common stock, shares authorized	6,000,000,000
Common stock issued, shares	501,891,243	501,891,243
Common stock, shares outstanding	460,750,652	463,808,059
Treasury stock, shares	41,140,591	38,083,184
Restricted cash	$ 3	$ 4