Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 2,538	$ 2,079
Accounts receivable, net of allowances of $851 and $939	24,012	23,493
Inventories	1,270	1,034
Prepaid expenses and other	5,334	3,307
Total current assets	33,154	29,913
Property, plant and equipment	252,030	246,498
Less accumulated depreciation	164,566	157,930
Property, plant and equipment, net	87,464	88,568
Investments in unconsolidated businesses	732	1,039
Wireless licenses	94,006	88,417
Goodwill	29,200	29,172
Other intangible assets, net	9,731	10,247
Other assets	11,275	9,787
Total assets	265,562	257,143
Current liabilities
Debt maturing within one year	6,502	3,453
Accounts payable and accrued liabilities	19,342	21,232
Other current liabilities	8,323	8,352
Total current liabilities	34,167	33,037
Long-term debt	106,440	113,642
Employee benefit obligations	19,660	22,112
Deferred income taxes	35,712	31,232
Other liabilities	13,496	12,433
Total long-term liabilities	175,308	179,419
Commitments and Contingencies (Note 11)
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 and 4,242,374,240 shares issued)	429	424
Additional paid in capital	13,436	11,101
Retained earnings	44,091	35,635
Accumulated other comprehensive income	3,201	2,659
Common stock in treasury, at cost (159,418,545 and 162,897,868 shares outstanding)	(6,987)	(7,139)
Deferred compensation – employee stock ownership plans and other	325	416
Noncontrolling interests	1,592	1,591
Total equity	56,087	44,687
Total liabilities and equity	$ 265,562	$ 257,143