$T
AT&T INC. Stock $t

$t Overview Financials Valuation SEC Filings Company Website

2017 Q4 Form 8-K Financial Statement

#000073271718000076 Filed on October 12, 2018

Income Statement

Concept	2017 Q4	2017	2016 Q4
Revenue	$41.68B	$160.5B	$41.84B
YoY Change	-0.39%	-1.98%	-0.66%
Cost Of Revenue	$21.93B	$18.71B	$21.12B
YoY Change	3.82%	-0.26%	7.25%
Gross Profit	$19.75B	$141.8B	$20.72B
YoY Change	-4.69%	-2.2%	-7.61%
Gross Profit Margin	47.39%	88.35%	49.53%
Selling, General & Admin	$9.443B	$35.47B	$9.984B
YoY Change	-5.42%	-2.43%	18.59%
% of Gross Profit	47.81%	25.0%	48.18%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$6.071B	$24.39B	$6.129B
YoY Change	-0.95%	-5.65%	-5.37%
% of Gross Profit	30.74%	17.19%	29.58%
Operating Expenses	$15.51B	$35.47B	$16.11B
YoY Change	-3.72%	-2.43%	8.17%
Operating Profit	$1.281B	$19.97B	$4.816B
YoY Change	-73.4%	-17.98%	-36.06%
Interest Expense	-$1.962B	$6.300B	-$1.153B
YoY Change	70.16%	28.31%	3.69%
% of Operating Profit	-153.16%	31.55%	-23.94%
Other Income/Expense, Net	-$602.0M	-$4.831B
YoY Change		6.53%
Pretax Income	-$1.283B	$15.14B	$4.248B
YoY Change	-130.2%	-23.59%	-43.6%
Income Tax	-$148.0M	-$14.71B	$676.0M
% Of Pretax Income		-97.15%	15.91%
Net Earnings	$19.04B	$29.45B	$2.437B
YoY Change	681.17%	126.96%	-39.17%
Net Earnings / Revenue	45.68%	18.34%	5.82%
Basic Earnings Per Share	$3.08	$4.77	$0.39
Diluted Earnings Per Share	$3.08	$4.76	$0.39
COMMON SHARES
Basic Shares Outstanding		6.164B shares
Diluted Shares Outstanding		6.183B shares

Balance Sheet

Concept	2017 Q4	2017	2016 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$50.50B	$50.50B	$5.788B
YoY Change	772.46%	772.46%	13.02%
Cash & Equivalents	$50.50B	$46.34B	$5.788B
Short-Term Investments
Other Short-Term Assets	$10.76B	$8.120B	$14.23B
YoY Change	-24.42%	-33.12%	7.27%
Inventory	$2.225B	$2.225B	$2.039B
Prepaid Expenses	$1.369B		$1.555B
Receivables	$16.52B	$16.52B	$16.79B
Other Receivables	$1.781B	$1.781B	$1.606B
Total Short-Term Assets	$79.15B	$79.15B	$38.37B
YoY Change	106.28%	106.28%	6.6%
LONG-TERM ASSETS
Property, Plant & Equipment	$125.2B	$125.2B	$124.9B
YoY Change	0.26%	0.26%	0.36%
Goodwill	$105.4B		$105.2B
YoY Change	0.23%		0.61%
Intangibles
YoY Change
Long-Term Investments	$1.560B	$1.560B	$1.674B
YoY Change	-6.81%	-6.81%	4.23%
Other Assets	$18.44B	$18.44B	$16.81B
YoY Change	9.71%	9.71%	9.55%
Total Long-Term Assets	$365.0B	$365.0B	$365.5B
YoY Change	-0.14%	-0.14%	-0.33%
TOTAL ASSETS
Total Short-Term Assets	$79.15B	$79.15B	$38.37B
Total Long-Term Assets	$365.0B	$365.0B	$365.5B
Total Assets	$444.1B	$444.1B	$403.8B
YoY Change	9.97%	9.97%	0.29%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$24.44B	$24.44B	$22.03B
YoY Change	10.95%	10.95%	4.66%
Accrued Expenses		$10.03B
YoY Change		10.1%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$2.000M	$0.00
YoY Change		-50.0%
Long-Term Debt Due	$38.37B	$38.37B	$9.832B
YoY Change	290.3%	290.44%	28.76%
Total Short-Term Liabilities	$81.39B	$81.39B	$50.58B
YoY Change	60.92%	60.92%	5.77%
LONG-TERM LIABILITIES
Long-Term Debt	$126.0B	$126.0B	$113.7B
YoY Change	10.81%	10.81%	-4.08%
Other Long-Term Liabilities	$19.75B	$51.52B	$21.75B
YoY Change	-9.2%	-6.88%	-2.29%
Total Long-Term Liabilities	$19.75B	$177.5B	$21.75B
YoY Change	-9.2%	5.02%	-2.29%
TOTAL LIABILITIES
Total Short-Term Liabilities	$81.39B	$81.39B	$50.58B
Total Long-Term Liabilities	$19.75B	$177.5B	$21.75B
Total Liabilities	$101.1B	$303.2B	$72.32B
YoY Change	39.84%	8.03%	-74.08%
SHAREHOLDERS EQUITY
Retained Earnings	$50.50B		$34.73B
YoY Change	45.39%		3.16%
Common Stock	$96.06B		$96.10B
YoY Change	-0.04%		-0.17%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$12.71B		$12.66B
YoY Change	0.43%		0.53%
Treasury Stock Shares	355.8M shares		356.2M shares
Shareholders Equity	$140.9B	$140.9B	$123.1B
YoY Change
Total Liabilities & Shareholders Equity	$444.1B	$444.1B	$403.8B
YoY Change	9.97%	9.97%	0.29%

Cashflow Statement

Concept	2017 Q4	2017	2016 Q4
OPERATING ACTIVITIES
Net Income	$19.04B	$29.45B	$2.437B
YoY Change	681.17%	126.96%	-39.17%
Depreciation, Depletion And Amortization	$6.071B	$24.39B	$6.129B
YoY Change	-0.95%	-5.65%	-5.37%
Cash From Operating Activities	$9.537B	$38.01B	$10.14B
YoY Change	-5.97%	-1.12%	10.42%
INVESTING ACTIVITIES
Capital Expenditures	-$4.891B	$20.65B	-$6.233B
YoY Change	-21.53%	-4.04%	6.33%
Acquisitions		-$1.123B
YoY Change		-137.95%
Other Investing Activities	$312.0M	-$976.0M	$207.0M
YoY Change	50.72%		-188.09%
Cash From Investing Activities	-$4.579B	-$18.94B	-$6.026B
YoY Change	-24.01%	-18.76%	-1.16%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$463.0M
YoY Change		-9.57%
Debt Paid & Issued, Net		$12.34B
YoY Change		14.01%
Cash From Financing Activities	-2.772B	$25.93B	-4.223B
YoY Change	-34.36%	-279.3%	1.3%
NET CHANGE
Cash From Operating Activities	9.537B	$38.01B	10.14B
Cash From Investing Activities	-4.579B	-$18.94B	-6.026B
Cash From Financing Activities	-2.772B	$25.93B	-4.223B
Net Change In Cash	2.186B	$45.00B	-107.0M
YoY Change	-2142.99%	6697.13%	-90.1%
FREE CASH FLOW
Cash From Operating Activities	$9.537B	$38.01B	$10.14B
Capital Expenditures	-$4.891B	$20.65B	-$6.233B
Free Cash Flow	$14.43B	$17.36B	$16.38B
YoY Change	-11.89%	2.58%	8.83%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2017Q4	invest	Derivative Notional Amount DerivativeNotionalAmount	48527000000	USD
CY2017Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	16522000000	USD
CY2016Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	16794000000	USD
CY2017Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	1369000000	USD
CY2016Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	1555000000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	10757000000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	14232000000	USD
CY2017Q4	us-gaap	Assets Current AssetsCurrent	79146000000	USD
CY2016Q4	us-gaap	Assets Current AssetsCurrent	38369000000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	105449000000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	105207000000	USD
CY2017Q4	us-gaap	Indefinite Lived License Agreements IndefiniteLivedLicenseAgreements	96136000000	USD
CY2016Q4	us-gaap	Indefinite Lived License Agreements IndefiniteLivedLicenseAgreements	94176000000	USD
CY2017Q4	t	Customer Lists And Relationships Net CustomerListsAndRelationshipsNet	10676000000	USD
CY2016Q4	t	Customer Lists And Relationships Net CustomerListsAndRelationshipsNet	14243000000	USD
CY2017Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	7464000000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	18444000000	USD
CY2016Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1674000000	USD
CY2016Q4	us-gaap	Other Intangible Assets Net OtherIntangibleAssetsNet	8441000000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1560000000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	16812000000	USD
CY2017Q4	us-gaap	Assets Assets	444097000000	USD
CY2016Q4	us-gaap	Assets Assets	403821000000	USD
CY2017Q4	us-gaap	Debt Current DebtCurrent	38374000000	USD
CY2016Q4	us-gaap	Debt Current DebtCurrent	9832000000	USD
CY2017Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	34470000000	USD
CY2016Q4	us-gaap	Accounts Payable And Accrued Liabilities Current AccountsPayableAndAccruedLiabilitiesCurrent	31138000000	USD
CY2017Q4	us-gaap	Customer Advances And Deposits Current CustomerAdvancesAndDepositsCurrent	4213000000	USD
CY2016Q4	us-gaap	Customer Advances And Deposits Current CustomerAdvancesAndDepositsCurrent	4519000000	USD
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	1262000000	USD
CY2016Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	2079000000	USD
CY2017Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	3070000000	USD
CY2016Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	3008000000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	81389000000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	50576000000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	125972000000	USD
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	113681000000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	43207000000	USD
CY2016Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	60128000000	USD
CY2017Q4	us-gaap	Postemployment Benefits Liability Noncurrent PostemploymentBenefitsLiabilityNoncurrent	31775000000	USD
CY2016Q4	us-gaap	Postemployment Benefits Liability Noncurrent PostemploymentBenefitsLiabilityNoncurrent	33578000000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	19747000000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	21748000000	USD
CY2017Q4	us-gaap	Deferred Credits And Other Liabilities Noncurrent DeferredCreditsAndOtherLiabilitiesNoncurrent	94729000000	USD
CY2016Q4	us-gaap	Deferred Credits And Other Liabilities Noncurrent DeferredCreditsAndOtherLiabilitiesNoncurrent	115454000000	USD
CY2017Q4	us-gaap	Common Stock Value CommonStockValue	6495000000	USD
CY2016Q4	us-gaap	Common Stock Value CommonStockValue	6495000000	USD
CY2017Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	89563000000	USD
CY2016Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	89604000000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	50500000000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	34734000000	USD
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	12714000000	USD
CY2016Q4	us-gaap	Treasury Stock Value TreasuryStockValue	12659000000	USD
CY2017Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	7017000000	USD
CY2016Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	4961000000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	1146000000	USD
CY2016Q4	us-gaap	Minority Interest MinorityInterest	975000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	142007000000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	124110000000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	444097000000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	403821000000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	37000000	USD
CY2015	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	49000000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1474000000	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1416000000	USD
CY2016	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	2947000000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	4117000000	USD
CY2016	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	169000000	USD
CY2015	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-91000000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	986000000	USD
CY2016	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	1003000000	USD
CY2015	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	-30000000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	778000000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-1709000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	38442000000	USD
CY2017	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	-449000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	35174000000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	20647000000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	21516000000	USD
CY2017	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2016	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-1000000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	19218000000	USD
CY2017	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	903000000	USD
CY2016	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	892000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	1183000000	USD
CY2017	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	816000000	USD
CY2016	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	118000000	USD
CY2015	us-gaap	Increase Decrease In Operating Liabilities IncreaseDecreaseInOperatingLiabilities	1354000000	USD
CY2017	t	Increase Decrease In Net Operating Assets Equip Installment Receivables And Related Asset Sales IncreaseDecreaseInNetOperatingAssetsEquipInstallmentReceivablesAndRelatedAssetSales	1239000000	USD
CY2016	t	Increase Decrease In Net Operating Assets Equip Installment Receivables And Related Asset Sales IncreaseDecreaseInNetOperatingAssetsEquipInstallmentReceivablesAndRelatedAssetSales	1307000000	USD
CY2015	t	Increase Decrease In Net Operating Assets Equip Installment Receivables And Related Asset Sales IncreaseDecreaseInNetOperatingAssetsEquipInstallmentReceivablesAndRelatedAssetSales	3560000000	USD
CY2017	t	Increase Decrease In Operating Assets Deferred Fulfillment Costs IncreaseDecreaseInOperatingAssetsDeferredFulfillmentCosts	1422000000	USD
CY2016	t	Increase Decrease In Operating Assets Deferred Fulfillment Costs IncreaseDecreaseInOperatingAssetsDeferredFulfillmentCosts	2359000000	USD
CY2015	t	Increase Decrease In Operating Assets Deferred Fulfillment Costs IncreaseDecreaseInOperatingAssetsDeferredFulfillmentCosts	1437000000	USD
CY2017	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	1066000000	USD
CY2016	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	910000000	USD
CY2015	us-gaap	Pension And Other Postretirement Benefit Contributions PensionAndOtherPostretirementBenefitContributions	735000000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	1315000000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	2586000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-1544000000	USD
CY2017	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	8163000000	USD
CY2016	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	25109000000	USD
CY2015	us-gaap	Adjustments To Reconcile Net Income Loss To Cash Provided By Used In Operating Activities AdjustmentsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivities	21487000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	38010000000	USD
CY2015	us-gaap	Interest Paid Capitalized InterestPaidCapitalized	797000000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	-1123000000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	2959000000	USD
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	30753000000	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	59000000	USD
CY2016	us-gaap	Proceeds From Divestiture Of Businesses And Interests In Affiliates ProceedsFromDivestitureOfBusinessesAndInterestsInAffiliates	646000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-18943000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-23318000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-48424000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	48793000000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	10140000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	33969000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	12339000000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	10823000000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	10042000000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	463000000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	512000000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	269000000	USD
CY2017	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	33000000	USD
CY2016	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	146000000	USD
CY2015	us-gaap	Proceeds From Sale Of Treasury Stock ProceedsFromSaleOfTreasuryStock	143000000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	12038000000	USD
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6164000000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	6168000000	shares
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	11797000000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	10200000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1944000000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-1616000000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-3819000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	25930000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-14462000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	9782000000	USD
CY2017Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	663000000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	661000000	USD
CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2016Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	1
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	14000000000	shares
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	14000000000	shares
CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	6495231088	shares
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	6495231088	shares
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	355806544	shares
CY2016Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	356237141	shares
CY2017	us-gaap	Dilutive Securities DilutiveSecurities	13000000	USD
CY2016	us-gaap	Dilutive Securities DilutiveSecurities	13000000	USD
CY2015	us-gaap	Dilutive Securities DilutiveSecurities	13000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	29463000000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	12989000000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	13358000000	USD
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	5628000000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	19000000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	21000000	shares
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	18000000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6183000000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	6189000000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	5646000000	shares
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	4	pure
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	968000000	USD
CY2017Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	495000000	USD
CY2017Q4	us-gaap	Additional Collateral Aggregate Fair Value AdditionalCollateralAggregateFairValue	107000000	USD
CY2016Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountNotOffsetAgainstCollateral	0	USD
CY2016Q4	us-gaap	Collateral Already Posted Aggregate Fair Value CollateralAlreadyPostedAggregateFairValue	3242000000	USD
CY2017Q4	t	Fixed Income Investment Securities Debt Maturities Within One Year Available For Sale Fair Value Held To Maturity Net Carrying Amount FixedIncomeInvestmentSecuritiesDebtMaturitiesWithinOneYearAvailableForSaleFairValueHeldToMaturityNetCarryingAmount	1000000	USD
CY2017Q4	t	Fixed Income Investment Securities Debt Maturities Next Two Calendar Years Available For Sale Fair Value Held To Maturity Net Carrying Amount FixedIncomeInvestmentSecuritiesDebtMaturitiesNextTwoCalendarYearsAvailableForSaleFairValueHeldToMaturityNetCarryingAmount	191000000	USD
CY2017Q4	t	Fixed Income Investment Securities Debt Maturities Third And Fourth Calendar Years Available For Sale Fair Value Held To Maturity Net Carrying Amount FixedIncomeInvestmentSecuritiesDebtMaturitiesThirdAndFourthCalendarYearsAvailableForSaleFairValueHeldToMaturityNetCarryingAmount	31000000	USD
CY2017Q4	t	Fixed Income Investment Securities Debt Maturities After Four Calendar Years Available For Sale Fair Value Held To Maturity Net Carrying Amount FixedIncomeInvestmentSecuritiesDebtMaturitiesAfterFourCalendarYearsAvailableForSaleFairValueHeldToMaturityNetCarryingAmount	510000000	USD
CY2017Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	24439000000	USD
CY2017Q4	t	Accrued Compensation Expense Current AccruedCompensationExpenseCurrent	2284000000	USD
CY2017Q4	us-gaap	Postemployment Benefits Liability Current PostemploymentBenefitsLiabilityCurrent	1585000000	USD
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	2661000000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	3501000000	USD
CY2016Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	22027000000	USD
CY2016Q4	t	Accrued Compensation Expense Current AccruedCompensationExpenseCurrent	2450000000	USD
CY2016Q4	us-gaap	Postemployment Benefits Liability Current PostemploymentBenefitsLiabilityCurrent	1644000000	USD
CY2016Q4	us-gaap	Interest Payable Current InterestPayableCurrent	2023000000	USD
CY2016Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	2994000000	USD
CY2017	us-gaap	Advertising Expense AdvertisingExpense	3772000000	USD
CY2016	us-gaap	Advertising Expense AdvertisingExpense	3768000000	USD
CY2015	us-gaap	Advertising Expense AdvertisingExpense	3632000000	USD
CY2017	us-gaap	Interest Costs Incurred InterestCostsIncurred	7203000000	USD
CY2016	us-gaap	Interest Costs Incurred InterestCostsIncurred	5802000000	USD
CY2015	us-gaap	Interest Costs Incurred InterestCostsIncurred	4917000000	USD
CY2017	us-gaap	Interest Paid InterestPaid	6622000000	USD
CY2016	us-gaap	Interest Paid InterestPaid	5696000000	USD
CY2015	us-gaap	Interest Paid InterestPaid	4822000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	2006000000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	3721000000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1851000000	USD
CY2016Q2	t	Stock Price Per Share Period End StockPricePerSharePeriodEnd	43.21
CY2016Q3	t	Stock Price Per Share Period End StockPricePerSharePeriodEnd	40.61
CY2016Q4	t	Stock Price Per Share Period End StockPricePerSharePeriodEnd	42.53
CY2017Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.63
CY2017Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.49
CY2017Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.56
CY2017Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.63
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	5950000000	USD
CY2016Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	4816000000	USD
CY2016Q1	us-gaap	Profit Loss ProfitLoss	3885000000	USD
CY2017Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.49
CY2016Q1	us-gaap	Revenues Revenues	40535000000	USD
CY2016Q2	us-gaap	Revenues Revenues	40520000000	USD
CY2016Q3	us-gaap	Revenues Revenues	40890000000	USD
CY2016Q4	us-gaap	Revenues Revenues	41841000000	USD
CY2016Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	6674000000	USD
CY2016Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	6103000000	USD
CY2016Q2	us-gaap	Profit Loss ProfitLoss	3515000000	USD
CY2016Q3	us-gaap	Profit Loss ProfitLoss	3418000000	USD
CY2016Q4	us-gaap	Profit Loss ProfitLoss	2515000000	USD
CY2016Q1	us-gaap	Net Income Loss NetIncomeLoss	3803000000	USD
CY2016Q2	us-gaap	Net Income Loss NetIncomeLoss	3408000000	USD
CY2016Q3	us-gaap	Net Income Loss NetIncomeLoss	3328000000	USD
CY2017Q1	t	Stock Price Per Share Period End StockPricePerSharePeriodEnd	41.55
CY2017Q2	t	Stock Price Per Share Period End StockPricePerSharePeriodEnd	37.73
CY2017Q3	t	Stock Price Per Share Period End StockPricePerSharePeriodEnd	39.17
CY2017Q4	t	Stock Price Per Share Period End StockPricePerSharePeriodEnd	38.88
CY2014Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	8741000000	USD
CY2015Q4	us-gaap	Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents	5273000000	USD
CY2017Q1	us-gaap	Revenues Revenues	39365000000	USD
CY2017Q2	us-gaap	Revenues Revenues	39837000000	USD
CY2017Q3	us-gaap	Revenues Revenues	39668000000	USD
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	6356000000	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	6526000000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	5807000000	USD
CY2017Q1	us-gaap	Profit Loss ProfitLoss	3574000000	USD
CY2017Q2	us-gaap	Profit Loss ProfitLoss	4014000000	USD
CY2017Q3	us-gaap	Profit Loss ProfitLoss	3123000000	USD
CY2017Q1	us-gaap	Net Income Loss NetIncomeLoss	3469000000	USD
CY2017Q2	us-gaap	Net Income Loss NetIncomeLoss	3915000000	USD
CY2017Q3	us-gaap	Net Income Loss NetIncomeLoss	3029000000	USD
CY2017Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.56
CY2016Q4	us-gaap	Net Income Loss NetIncomeLoss	2437000000	USD
CY2016Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2016Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.55
CY2016Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.54
CY2016Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.39
CY2016Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
CY2016Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.55
CY2016Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.54
CY2016Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.39
CY2017Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	1818000000	USD
CY2016Q4	us-gaap	Capital Lease Obligations CapitalLeaseObligations	869000000	USD
CY2017Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	0	USD
CY2016Q4	us-gaap	Other Long Term Debt OtherLongTermDebt	259000000	USD
CY2017Q4	t	Long Term Debt Including Capital Lease Obligations LongTermDebtIncludingCapitalLeaseObligations	164344000000	USD
CY2016Q4	t	Long Term Debt Including Capital Lease Obligations LongTermDebtIncludingCapitalLeaseObligations	123509000000	USD
CY2017Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	38372000000	USD
CY2016Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	9828000000	USD
CY2017Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	2000000	USD
CY2016Q4	us-gaap	Short Term Bank Loans And Notes Payable ShortTermBankLoansAndNotesPayable	4000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	37836000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	8793000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	7464000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	8465000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	9690000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	95631000000	USD
CY2017	t	Weighted Average Interest Rate Long Term Debt Scheduled Principal Repayment Year One WeightedAverageInterestRateLongTermDebtScheduledPrincipalRepaymentYearOne	0.042	pure
CY2017	t	Weighted Average Interest Rate Long Term Debt Scheduled Principal Repayment Year Two WeightedAverageInterestRateLongTermDebtScheduledPrincipalRepaymentYearTwo	0.035	pure
CY2017	t	Weighted Average Interest Rate Long Term Debt Scheduled Principal Repayment Year Three WeightedAverageInterestRateLongTermDebtScheduledPrincipalRepaymentYearThree	0.029	pure
CY2017	t	Weighted Average Interest Rate Long Term Debt Scheduled Principal Repayment Year Four WeightedAverageInterestRateLongTermDebtScheduledPrincipalRepaymentYearFour	0.036	pure
CY2017	t	Weighted Average Interest Rate Long Term Debt Scheduled Principal Repayment Year Five WeightedAverageInterestRateLongTermDebtScheduledPrincipalRepaymentYearFive	0.032	pure
CY2017	t	Weighted Average Interest Rate Long Term Debt Scheduled Principal Repayment Thereafter WeightedAverageInterestRateLongTermDebtScheduledPrincipalRepaymentThereafter	0.048	pure
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due Current CapitalLeasesFutureMinimumPaymentsDueCurrent	142000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Two Years CapitalLeasesFutureMinimumPaymentsDueInTwoYears	90000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Three Years CapitalLeasesFutureMinimumPaymentsDueInThreeYears	100000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Four Years CapitalLeasesFutureMinimumPaymentsDueInFourYears	103000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due In Five Years CapitalLeasesFutureMinimumPaymentsDueInFiveYears	115000000	USD
CY2017Q4	us-gaap	Capital Leases Future Minimum Payments Due Thereafter CapitalLeasesFutureMinimumPaymentsDueThereafter	1268000000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	210000000	USD
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-18000000	USD
CY2017	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	50000000	USD
CY2016	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	481000000	USD
CY2016	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	167000000	USD
CY2016	us-gaap	Goodwill Other Increase Decrease GoodwillOtherIncreaseDecrease	-9000000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	104568000000	USD
CY2017Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	102587000000	USD
CY2016Q4	us-gaap	Indefinite Lived Intangible Assets Excluding Goodwill IndefiniteLivedIntangibleAssetsExcludingGoodwill	100655000000	USD
CY2017	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	4626000000	USD
CY2016	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	5186000000	USD
CY2015	us-gaap	Amortization Of Intangible Assets AmortizationOfIntangibleAssets	2728000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	3002000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	2489000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	2009000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	1535000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	1074000000	USD
CY2017	t	Finite Lived Intangible Assets Writeoffs Of Fully Amortized Amounts FiniteLivedIntangibleAssetsWriteoffsOfFullyAmortizedAmounts	2273000000	USD
CY2016	t	Finite Lived Intangible Assets Writeoffs Of Fully Amortized Amounts FiniteLivedIntangibleAssetsWriteoffsOfFullyAmortizedAmounts	117000000	USD
CY2017	us-gaap	Finite Lived Intangible Asset Useful Life FiniteLivedIntangibleAssetUsefulLife	P8Y6M0D
CY2016Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	4304000000	USD
CY2016Q4	t	Deferred Tax Liabilities Deferred Fulfillment Costs DeferredTaxLiabilitiesDeferredFulfillmentCosts	3204000000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	31000000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	1411000000	USD
CY2017Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	43176000000	USD
CY2016Q4	us-gaap	Deferred Income Tax Liabilities Net DeferredIncomeTaxLiabilitiesNet	58717000000	USD
CY2017Q4	t	Deferred Tax Liabilities Depreciation And Amortization Expenses DeferredTaxLiabilitiesDepreciationAndAmortizationExpenses	30982000000	USD
CY2016Q4	t	Deferred Tax Liabilities Depreciation And Amortization Expenses DeferredTaxLiabilitiesDepreciationAndAmortizationExpenses	44903000000	USD
CY2017Q4	t	Deferred Tax Liabilities Indefinite Lived Intangibles DeferredTaxLiabilitiesIndefiniteLivedIntangibles	16129000000	USD
CY2016Q4	t	Deferred Tax Liabilities Indefinite Lived Intangibles DeferredTaxLiabilitiesIndefiniteLivedIntangibles	22892000000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	6202000000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	10045000000	USD
CY2017Q4	t	Deferred Tax Liabilities Deferred Fulfillment Costs DeferredTaxLiabilitiesDeferredFulfillmentCosts	2472000000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	6067000000	USD
CY2017	t	Income Tax Examination Years Examination Complete IncomeTaxExaminationYearsExaminationComplete	2010
CY2017	t	Closed Tax Years By Major Tax Jurisdiction ClosedTaxYearsByMajorTaxJurisdiction	2003
CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	-1222000000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	216000000	USD
CY2017Q4	t	Deferred Tax Liabilities Before Valuation Allowance DeferredTaxLiabilitiesBeforeValuationAllowance	38536000000	USD
CY2016Q4	t	Deferred Tax Liabilities Before Valuation Allowance DeferredTaxLiabilitiesBeforeValuationAllowance	56434000000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	4640000000	USD
CY2016Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2283000000	USD
CY2017Q4	t	Operating And Capital Loss Carry Forwards Federal OperatingAndCapitalLossCarryForwardsFederal	240000000	USD
CY2017Q4	t	Operating And Capital Loss Carryforwards State OperatingAndCapitalLossCarryforwardsState	916000000	USD
CY2017Q4	t	Operating And Capital Loss Carryforwards Foreign OperatingAndCapitalLossCarryforwardsForeign	2770000000	USD
CY2017	t	Operating And Capital Loss Carry Forwards Expiration Dates OperatingAndCapitalLossCarryForwardsExpirationDates	2037-12-31
CY2017	us-gaap	Tax Credit Carryforward Expiration Date TaxCreditCarryforwardExpirationDate	2037-12-31
CY2016	t	Net Deposits To Taxing Jurisdictions NetDepositsToTaxingJurisdictions	3084000000	USD
CY2017	t	Net Deposits To Taxing Jurisdictions NetDepositsToTaxingJurisdictions	3058000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	83000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	24000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	107000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	318000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	473000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	1168000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	25000000	USD
CY2016	t	Unrecognized Tax Benefits Net Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsNetResultingFromSettlementsWithTaxingAuthorities	-50000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	6516000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	30000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	6898000000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	671000000	USD
CY2017	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	1120000000	USD
CY2016	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	621000000	USD
CY2016	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-519000000	USD
CY2015	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	-382000000	USD
CY2017	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	1460000000	USD
CY2016	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	-184000000	USD
CY2015	us-gaap	Foreign Income Tax Expense Benefit Continuing Operations ForeignIncomeTaxExpenseBenefitContinuingOperations	-62000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	16438000000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	20911000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	7648000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1333000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	1140000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	1438000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	200000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	461000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	28000000	USD
CY2017	t	Unrecognized Tax Benefits Net Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsNetResultingFromSettlementsWithTaxingAuthorities	23000000	USD
CY2017Q4	t	Gross Unrecognized Tax Benefits GrossUnrecognizedTaxBenefits	8981000000	USD
CY2016Q4	t	Gross Unrecognized Tax Benefits GrossUnrecognizedTaxBenefits	7656000000	USD
CY2017Q4	t	Deferred Federal And State Income Tax Benefits DeferredFederalAndStateIncomeTaxBenefits	388000000	USD
CY2016Q4	t	Deferred Federal And State Income Tax Benefits DeferredFederalAndStateIncomeTaxBenefits	557000000	USD
CY2017Q4	t	Unrecognized Tax Due To Timing Issues UnrecognizedTaxDueToTimingIssues	2368000000	USD
CY2016Q4	t	Unrecognized Tax Due To Timing Issues UnrecognizedTaxDueToTimingIssues	3398000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	6225000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	3701000000	USD
CY2017	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	682000000	USD
CY2016	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2915000000	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	2496000000	USD
CY2017	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-17970000000	USD
CY2016	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	3127000000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	3828000000	USD
CY2017	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	-17288000000	USD
CY2016	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	6042000000	USD
CY2015	us-gaap	Federal Income Tax Expense Benefit Continuing Operations FederalIncomeTaxExpenseBenefitContinuingOperations	6324000000	USD
CY2017	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	79000000	USD
CY2016	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	282000000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	72000000	USD
CY2017	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	1041000000	USD
CY2016	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	339000000	USD
CY2015	us-gaap	State And Local Income Tax Expense Benefit Continuing Operations StateAndLocalIncomeTaxExpenseBenefitContinuingOperations	743000000	USD
CY2017	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	471000000	USD
CY2016	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	335000000	USD
CY2015	us-gaap	Current Foreign Tax Expense Benefit CurrentForeignTaxExpenseBenefit	320000000	USD
CY2017	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	989000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Domestic IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic	21519000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1299000000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Foreign IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign	-1099000000	USD
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CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	416000000	USD
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CY2015	t	Performance Stock Units Expense PerformanceStockUnitsExpense	299000000	USD
CY2017	us-gaap	Restricted Stock Expense RestrictedStockExpense	90000000	USD
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CY2015	us-gaap	Restricted Stock Expense RestrictedStockExpense	147000000	USD
CY2017	t	Other Stock Plan Expense OtherStockPlanExpense	-5000000	USD
CY2016	t	Other Stock Plan Expense OtherStockPlanExpense	21000000	USD
CY2015	t	Other Stock Plan Expense OtherStockPlanExpense	5000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	480000000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	653000000	USD
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CY2017	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	184000000	USD
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CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	31000000	shares
CY2017Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	29000000	shares
CY2016Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	35.57
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CY2017	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	41.17
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CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	155000000	USD
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	303000000	USD
CY2015	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-2821000000	USD
CY2017Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.5
CY2016Q4	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.49
CY2017Q4	us-gaap	Stock Repurchase Program Remaining Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased	388000000	shares
CY2017	us-gaap	Reductions In Other Assets Amount ReductionsInOtherAssetsAmount	8058000000	USD
CY2016	us-gaap	Reductions In Other Assets Amount ReductionsInOtherAssetsAmount	7629000000	USD
CY2015	us-gaap	Reductions In Other Assets Amount ReductionsInOtherAssetsAmount	7436000000	USD
CY2017	us-gaap	Additions To Other Assets Amount AdditionsToOtherAssetsAmount	2077000000	USD
CY2016	us-gaap	Additions To Other Assets Amount AdditionsToOtherAssetsAmount	2368000000	USD
CY2015	us-gaap	Additions To Other Assets Amount AdditionsToOtherAssetsAmount	2266000000	USD
CY2017	t	Additions To Other Liabilities Amount AdditionsToOtherLiabilitiesAmount	215000000	USD
CY2016	t	Additions To Other Liabilities Amount AdditionsToOtherLiabilitiesAmount	0	USD
CY2015	t	Additions To Other Liabilities Amount AdditionsToOtherLiabilitiesAmount	0	USD
CY2017Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.03	pure
CY2016Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Rate Of Compensation Increase DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease	0.03	pure
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	34000000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	30000000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	401000000	USD
CY2017	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	360000000	USD
CY2017	t	Unrecorded Unconditional Purchase Obligation During First Anniversary UnrecordedUnconditionalPurchaseObligationDuringFirstAnniversary	10074000000	USD
CY2017	t	Unrecorded Unconditional Purchase Obligation During Second And Third Anniversary UnrecordedUnconditionalPurchaseObligationDuringSecondAndThirdAnniversary	12331000000	USD
CY2017	t	Unrecorded Unconditional Purchase Obligation During Fourth And Fifth Anniversary UnrecordedUnconditionalPurchaseObligationDuringFourthAndFifthAnniversary	7003000000	USD
CY2017	t	Unrecorded Unconditional Purchase Obligation After Fifth Anniversary UnrecordedUnconditionalPurchaseObligationAfterFifthAnniversary	5831000000	USD
CY2017	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2017Q4	us-gaap	Cash Cash	4156000000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	2225000000	USD
CY2016Q4	us-gaap	Inventory Net InventoryNet	2039000000	USD
CY2017Q4	t	Inventory Wireless Handsets And Accessories Net InventoryWirelessHandsetsAndAccessoriesNet	2160000000	USD
CY2016Q4	t	Inventory Wireless Handsets And Accessories Net InventoryWirelessHandsetsAndAccessoriesNet	1951000000	USD
CY2017	t	Intangible Assets Number Of Major Classes IntangibleAssetsNumberOfMajorClasses	5	pure
CY2017	t	Annual Impairment Test Timing AnnualImpairmentTestTiming	October 1
CY2017	t	Indefinite Lived Intangible Asset Useful Life IndefiniteLivedIntangibleAssetUsefulLife	P10Y0M0D
CY2017	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	703000000	USD
CY2016	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	631000000	USD
CY2015	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	653000000	USD
CY2017	dei	Document Type DocumentType	8-K
CY2017	dei	Amendment Flag AmendmentFlag	false
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0000732717
CY2017	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017	dei	Entity Registrant Name EntityRegistrantName	AT&T Inc.
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
CY2017	dei	Trading Symbol TradingSymbol	T
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CY2017Q2	dei	Entity Public Float EntityPublicFloat	232000000000	USD
CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	124450000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	125222000000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	124899000000	USD
CY2017	us-gaap	Assets Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition1 AssetsDisposedOfByMethodOtherThanSaleInPeriodOfDispositionGainLossOnDisposition1	2914000000	USD
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CY2015	us-gaap	Assets Disposed Of By Method Other Than Sale In Period Of Disposition Gain Loss On Disposition1 AssetsDisposedOfByMethodOtherThanSaleInPeriodOfDispositionGainLossOnDisposition1	35000000	USD
CY2017Q4	us-gaap	Notes Payable Fair Value Disclosure NotesPayableFairValueDisclosure	162526000000	USD
CY2016Q4	us-gaap	Notes Payable Fair Value Disclosure NotesPayableFairValueDisclosure	122381000000	USD
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CY2015	t	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	42378000000	USD
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CY2016	t	Segment Reporting Information Operations And Support Expenses SegmentReportingInformationOperationsAndSupportExpenses	114396000000	USD
CY2016	t	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	49390000000	USD
CY2017	t	Earnings Before Interest Taxes Depreciation And Amortization EarningsBeforeInterestTaxesDepreciationAndAmortization	44357000000	USD
CY2015Q4	us-gaap	Equity Method Investments EquityMethodInvestments	1606000000	USD
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CY2016	t	Equity Method Investment Additional Investments EquityMethodInvestmentAdditionalInvestments	208000000	USD
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	46000000	USD
CY2016	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	61000000	USD
CY2017	t	Equity Method Investment Currency Translation Adjustments EquityMethodInvestmentCurrencyTranslationAdjustments	22000000	USD
CY2016	t	Equity Method Investment Currency Translation Adjustments EquityMethodInvestmentCurrencyTranslationAdjustments	-156000000	USD
CY2017	t	Equity Method Investment Other EquityMethodInvestmentOther	-13000000	USD
CY2016	t	Equity Method Investment Other EquityMethodInvestmentOther	-21000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-128000000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	98000000	USD
CY2017Q4	us-gaap	Interest Rate Cash Flow Hedge Gain Loss To Be Reclassified During Next12 Months Net InterestRateCashFlowHedgeGainLossToBeReclassifiedDuringNext12MonthsNet	58000000	USD
CY2017	us-gaap	Concentration Risk Additional Characteristic ConcentrationRiskAdditionalCharacteristic	0
CY2016	us-gaap	Concentration Risk Additional Characteristic ConcentrationRiskAdditionalCharacteristic	0
CY2015	us-gaap	Concentration Risk Additional Characteristic ConcentrationRiskAdditionalCharacteristic	0
CY2016Q1	t	Stock Price Per Share Period End StockPricePerSharePeriodEnd	39.17
CY2017	us-gaap	Income Tax Effects Allocated Directly To Equity Cumulative Effect Of Change In Accounting Principle IncomeTaxEffectsAllocatedDirectlyToEquityCumulativeEffectOfChangeInAccountingPrinciple	1529000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	6000000	USD
CY2017	t	Preferred Equity Interest Purchase Rights Description PreferredEquityInterestPurchaseRightsDescription	The pension plan trust has the right to require AT&T to purchase the preferred equity interest at the greater of their fair market value or minimum liquidation value plus any unpaid cumulative dividends, and in installments, as specified in the contribution agreement upon the occurrence of any of the following: (1) at any time if the ratio of debt to total capitalization of Mobility exceeds that of AT&T, (2) the date on which AT&T Inc. is rated below investment grade for two consecutive calendar quarters, (3) upon a change of control if AT&T does not exercise its purchase option, or (4) at any time after a seven-year period ending in September 2020.
CY2017Q4	t	Debt Financed Shares Held By Employee Stock Ownership Plans DebtFinancedSharesHeldByEmployeeStockOwnershipPlans	0	USD
CY2016	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-1024000000	USD
CY2015	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	2152000000	USD
CY2017	us-gaap	Proceeds From Collection Of Finance Receivables ProceedsFromCollectionOfFinanceReceivables	976000000	USD
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CY2017	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-174000000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	1642000000	USD
CY2017	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-15940000000	USD
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CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	5121000000	USD
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CY2015Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	5000000	USD
CY2014Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2017Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	428000000	USD
CY2016Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	140000000	USD
CY2015Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	147000000	USD
CY2014Q4	us-gaap	Restricted Cash And Cash Equivalents Noncurrent RestrictedCashAndCashEquivalentsNoncurrent	138000000	USD
CY2017Q4	us-gaap	Derecognized Assets Securitized Or Assetbacked Financing Arrangement Assets And Any Other Financial Assets Managed Together Principal Amount Outstanding DerecognizedAssetsSecuritizedOrAssetbackedFinancingArrangementAssetsAndAnyOtherFinancialAssetsManagedTogetherPrincipalAmountOutstanding	7446000000	USD

Files In Submission

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$T
AT&T INC. Stock $t

2017 Q4 Form 8-K Financial Statement

#000073271718000076 Filed on October 12, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$T AT&T INC. Stock $t

2017 Q4 Form 8-K Financial Statement

#000073271718000076 Filed on October 12, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$T
AT&T INC. Stock $t