Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current assets
Cash and cash equivalents	$ 7,047	$ 2,594
Accounts receivable	24,852	26,162
Less: Allowance for credit losses	1,055	0
Less: Allowance for doubtful accounts	0	733
Accounts receivable, net (Note 1)	23,797	25,429
Inventories	1,633	1,422
Prepaid expenses and other	8,228	8,028
Total current assets	40,705	37,473
Property, plant and equipment	268,993	265,734
Less accumulated depreciation	176,816	173,819
Property, plant and equipment, net	92,177	91,915
Investments in unconsolidated businesses	543	558
Wireless licenses	92,471	95,059
Goodwill	24,382	24,389
Other intangible assets, net	9,371	9,498
Operating lease right-of-use assets	22,472	22,694
Other assets	12,379	10,141
Total assets	294,500	291,727
Current liabilities
Debt maturing within one year	11,175	10,777
Accounts payable and accrued liabilities	17,419	21,806
Current operating lease liabilities	3,331	3,261
Other current liabilities	9,132	9,024
Total current liabilities	41,057	44,868
Long-term debt	106,561	100,712
Employee benefit obligations	17,617	17,952
Deferred income taxes	33,709	34,703
Non-current operating lease liabilities	18,117	18,393
Other liabilities	15,786	12,264
Total long-term liabilities	191,790	184,024
Commitments and Contingencies
Equity
Series preferred stock ($0.10 par value; 250,000,000 shares authorized; none issued)	0	0
Common stock ($0.10 par value; 6,250,000,000 shares authorized in each period; 4,291,433,646 issued in each period)	429	429
Additional paid in capital	13,302	13,419
Retained earnings	54,557	53,147
Accumulated other comprehensive income (loss)	(1,502)	998
Common stock in treasury, at cost (153,438,241 and 155,605,527 shares outstanding)	(6,725)	(6,820)
Deferred compensation – employee stock ownership plans and other	149	222
Noncontrolling interests	1,443	1,440
Total equity	61,653	62,835
Total liabilities and equity	$ 294,500	$ 291,727