CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Net unevaluated costs excluded from amortization, cumulative	$ 2,217	$ 2,231
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	2,500,000,000	2,500,000,000
Common stock, shares issued (in shares)	1,161,545,588	1,158,672,666
Treasury stock, shares (in shares)	61,614,693	44,353,224