Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2018	Dec. 31, 2017
Current Assets
Cash and cash equivalents	$ 48,872	$ 50,498
Accounts receivable - net of allowances for doubtful accounts of $642 and $663	16,290	16,522
Prepaid expenses	1,335	1,369
Other current assets	12,008	10,757
Total current assets	78,505	79,146
Property, plant and equipment	317,127	313,499
Less: accumulated depreciation and amortization	(192,003)	(188,277)
Property, Plant and Equipment - Net	125,124	125,222
Goodwill	105,482	105,449
Licenses	96,556	96,136
Customer Lists and Relationships - Net	9,878	10,676
Other Intangible Assets - Net	7,201	7,464
Investment in and Advances to Equity Affiliates	2,623	1,560
Other Assets	20,974	18,444
Total Assets	446,343	444,097
Current Liabilities
Debt maturing within one year	29,322	38,374
Accounts payable and accrued liabilities	31,569	34,470
Advanced billings and customer deposits	5,081	4,213
Accrued taxes	1,534	1,262
Dividends payable	3,074	3,070
Total current liabilities	70,580	81,389
Long-Term Debt	133,724	125,972
Deferred Credits and Other Noncurrent Liabilities
Deferred income taxes	45,730	43,207
Postemployment benefit obligation	30,116	31,775
Other noncurrent liabilities	19,117	19,747
Total deferred credits and other noncurrent liabilities	94,963	94,729
Stockholders' Equity
Common stock ($1 par value, 14,000,000,000 authorized at March 31, 2018 and December 31, 2017: issued 6,495,231,088 at March 31, 2018 and December 31, 2017)	6,495	6,495
Additional paid-in capital	89,404	89,563
Retained earnings	55,067	50,500
Treasury stock (347,690,578 at March 31, 2018 and 355,806,544 at December 31, 2017, at cost)	(12,432)	(12,714)
Accumulated other comprehensive income	7,386	7,017
Noncontrolling interest	1,156	1,146
Total stockholders' equity	147,076	142,007
Total Liabilities and Stockholders' Equity	$ 446,343	$ 444,097