CONSOLIDATED BALANCE SHEET (Parenthetical) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Cash and cash equivalent	$ 279	$ 262
Accounts receivable, after allowance for credit loss, current	1,390	908
Other assets, current	649	676
Gathering, processing and transmission facilities	673	670
Other property and equipment	1,126	1,140
Accumulated depreciation, depletion, and amortization	34,213	34,810
Equity method interests	1,365	1,555
Deferred charges and other	581	526
Accounts payable	651	444
Other current liabilities	1,170	862
Long-term debt	7,295	8,770
Asset retirement obligation	2,089	1,888
Other noncurrent liabilities	$ 572	$ 602
Common stock, par value (in USD per share)	$ 0.625	$ 0.625
Common stock, shares authorized (in shares)	1,000	860,000,000
Common stock, shares issued (in shares)	1,000	418,429,375
Treasury stock, shares (in shares)	0	40,946,745
Variable Interest Entity, Primary Beneficiary
Cash and cash equivalent	$ 132	$ 24
Accounts receivable, after allowance for credit loss, current	109	95
Other assets, current	9	5
Gathering, processing and transmission facilities	209	206
Other property and equipment	3	3
Accumulated depreciation, depletion, and amortization	25	13
Equity method interests	1,365	1,555
Deferred charges and other	6	5
Accounts payable	12	6
Other current liabilities	15	4
Long-term debt	657	624
Asset retirement obligation	68	64
Other noncurrent liabilities	$ 67	$ 144