Consolidated Balance Sheet - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 580	$ 742
Receivables, less reserve of $15 and $22	1,142	747
Inventories	77	76
Other current assets	22	47
Total current assets	1,821	1,612
Equity method investments	450	447
Property, plant and equipment, less accumulated depreciation, depletion and amortization of $22,412 and $20,358	14,499	15,638
Other noncurrent assets	224	259
Total assets	16,994	17,956
Current liabilities:
Accounts payable	1,110	837
Payroll and benefits payable	74	57
Accrued taxes	157	72
Other current liabilities	260	247
Long-term debt due within one year	36	0
Current liabilities	1,637	1,213
Long-term debt	3,978	5,404
Deferred tax liabilities	136	163
Defined benefit postretirement plan obligations	137	180
Asset retirement obligations	288	241
Deferred credits and other liabilities	132	194
Total liabilities	6,308	7,395
Commitments and contingencies
Stockholders’ Equity
Preferred stock – no shares issued or outstanding (no par value, 26 million shares authorized)	0	0
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract]
Issued – 937 million shares (par value $1 per share, 1.925 billion shares authorized at December 31, 2021 and December 31, 2020)	937	937
Held in treasury, at cost – 194 million shares and 148 million shares	(4,825)	(4,089)
Additional paid-in capital	7,221	7,174
Retained earnings	7,271	6,466
Accumulated other comprehensive income	82	73
Total stockholders’ equity	10,686	10,561
Total liabilities and stockholders’ equity	$ 16,994	$ 17,956