Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions		Jun. 30, 2022	Dec. 31, 2021
Other property and equipment, net	[1]	$ 1,525	$ 1,472
Common stock, par value (in dollars per share)		$ 0.10	$ 0.10
Common stock, shares authorized (in shares)		1,000,000,000.0	1,000,000,000.0
Common stock, shares issued (in shares)		656,000,000	663,000,000
Treasury Stock, Shares		200,000
CDM [Member]
Other property and equipment, net		$ 122	$ 111

[1] $122 million and $111 million related to CDM in 2022 and 2021, respectively.