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Preparation Of Interim Financial Statements (Tables)
9 Months Ended
Sep. 30, 2018
New Accounting Pronouncements and Changes in Accounting Principles  
Schedule of New Accounting Pronouncements and Changes in Accounting Principles [Table Text Block]
Pension and Postretirement Benefits
Historical Effect of
Accounting Adoption ofAs
MethodASU 2017-07Adjusted
For the three months ended September 30, 2018
Consolidated Statements of Income
Other cost of revenues$8,527$124$8,651
Selling, general and administrative expenses9,2073919,598
Operating Income7,784(515)7,269
Other Income (Expense) – net5385151,053
Net Income4,816-4,816
For the three months ended September 30, 2017
Consolidated Statements of Income
Other cost of revenues$9,431$263$9,694
Selling, general and administrative expenses8,3173338,650
Operating Income6,403(596)5,807
Other Income (Expense) – net246596842
Net Income3,123-3,123
For the nine months ended September 30, 2018
Consolidated Statements of Income
Other cost of revenues$23,166$1,049$24,215
Selling, general and administrative expenses22,8593,32026,179
Operating Income24,305(4,369)19,936
Other Income (Expense) – net7394,3695,108
Net Income14,823-14,823
For the nine months ended September 30, 2017
Consolidated Statements of Income
Other cost of revenues$27,714$837$28,551
Selling, general and administrative expenses24,9171,06425,981
Operating Income20,590(1,901)18,689
Other Income (Expense) – net3541,9012,255
Net Income10,711-10,711

Cash Flows
HistoricalEffect ofEffect of
AccountingAdoption ofAdoption ofAs
MethodASU 2016-15ASU 2016-18Adjusted
For the nine months ended September 30, 2018
Consolidated Statements of Cash Flows
Changes in other current assets$(2,731)$-$2$(2,729)
Equipment installment receivables and related sales 720 (500) - 220
Other – net1,399-(116)1,283
Cash Provided by (Used in) Operating Activities32,136(500)(114)31,522
(Purchases) sales of securities – net7-(241)(234)
Cash collections of deferred purchase price-500-500
Cash (Used in) Provided by Investing Activities(60,246)500(241)(59,987)
Change in cash and cash equivalents and restricted cash$(41,789)$-$(355)$(42,144)
For the nine months ended September 30, 2017
Consolidated Statements of Cash Flows
Changes in other current assets$(106)$-$-$(106)
Equipment installment receivables and related sales1,116(665)-451
Other – net(1,420)-(136)(1,556)
Cash Provided by (Used in) Operating Activities29,274(665)(136)28,473
(Purchases) sales of securities – net(2)-237235
Cash collections of deferred purchase price-665-665
Cash (Used in) Provided by Investing Activities(15,266)665237(14,364)
Change in cash and cash equivalents and restricted cash$42,711$-$100$42,811

For the three months ended September 30, 2018As ReportedHistorical Accounting Method
Consolidated Statements of Income:
Service Revenues$41,297$42,681
Equipment Revenues4,4423,926
Total Operating Revenues45,73946,607
Other cost of revenues8,6519,568
Selling, general and administrative expenses9,59810,145
Total Operating Expenses38,47039,934
Operating income7,2696,673
Income before income taxes6,2075,611
Income tax expense1,3911,245
Net income4,8164,366
Net income attributable to AT&T$4,718$4,273
Basic Earnings per Share Attributable to AT&T$0.65$0.59
Diluted Earnings per Share Attributable to AT&T$0.65$0.59
For the nine months ended September 30, 2018
Consolidated Statements of Income:
Service Revenues$109,849$114,048
Equipment Revenues12,91411,398
Total Operating Revenues122,763125,446
Other cost of revenues24,21526,964
Selling, general and administrative expenses26,17927,909
Total Operating Expenses102,827107,306
Operating income19,93618,140
Income before income taxes19,12817,332
Income tax expense4,3053,865
Net income14,82313,467
Net income attributable to AT&T$14,512$13,173
Basic Earnings per Share Attributable to AT&T$2.19$1.99
Diluted Earnings per Share Attributable to AT&T$2.19$1.99
At September 30, 2018
Consolidated Balance Sheets:
Other current assets$16,278$13,750
Other Assets25,49023,050
Accounts payable and accrued liabilities39,37539,554
Advanced billings and customer deposits6,0456,109
Deferred income taxes60,49559,264
Other noncurrent liabilities26,49026,252
Retained earnings57,62453,929
Accumulated other comprehensive income5,3835,385
Noncontrolling interest$1,123$1,071