Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,107	$ 1,829
Accounts receivable, less allowances of $148 and $130, respectively	519	553
Contract acquisition costs	93	97
Prepaid expenses	85	90
Income taxes and other current assets	43	85
Total current assets	2,847	2,654
Property, plant and equipment, net	12,987	12,931
Other intangibles, net	598	677
Other assets	528	533
Total assets	16,960	16,795
Current liabilities:
Long-term debt due within one year	5,782	5,781
Accounts payable	507	540
Advanced billings	210	202
Accrued other taxes	202	204
Accrued interest	96	47
Pension and other postretirement benefits	48	48
Other current liabilities	306	318
Total current liabilities	7,151	7,140
Deferred income taxes	430	343
Pension and other postretirement benefits	2,194	2,195
Other liabilities	445	452
Total liabilities not subject to compromise	10,220	10,130
Liabilities subject to compromise	11,570	11,565
Total liabilities	21,790	21,695
Equity (Deficit):
Common stock, $0.25 par value (175,000 authorized shares, 106,025 issued, and 104,671 and 104,793 outstanding, at March 31, 2021 and December 31, 2020, respectively)	27	27
Additional paid-in capital	4,817	4,817
Accumulated deficit	(8,915)	(8,975)
Accumulated other comprehensive loss, net of tax	(744)	(755)
Treasury common stock	(15)	(14)
Total equity (deficit)	(4,830)	(4,900)
Total liabilities and equity (deficit)	$ 16,960	$ 16,795