$NSC
NORFOLK SOUTHERN CORP Stock $nsc

$nsc Overview Financials Valuation SEC Filings Company Website

2014 Q4 Form 10-K Financial Statement

#000070216516000162 Filed on February 08, 2016

Income Statement

Concept	2014 Q4	2014 Q3	2014 Q2
Revenue	$2.870B	$3.023B	$3.042B
YoY Change	-0.38%	7.05%	8.57%
Cost Of Revenue	$1.739B	$1.789B	$1.785B
YoY Change	-1.58%	2.52%	2.59%
Gross Profit	$1.131B	$1.234B	$1.257B
YoY Change	1.53%	14.37%	18.36%
Gross Profit Margin	39.41%	40.82%	41.32%
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$241.0M	$237.0M	$240.0M
YoY Change	2.55%	2.6%	5.26%
% of Gross Profit	21.31%	19.21%	19.09%
Operating Expenses	$240.0M	$2.025B	$2.023B
YoY Change	3.0%	2.53%	795.13%
Operating Profit	$891.0M	$998.0M	$1.019B
YoY Change	1.14%	17.55%	21.89%
Interest Expense	-$129.0M	$138.0M	$139.0M
YoY Change	-5.84%	5.34%	-208.59%
% of Operating Profit	-14.48%	13.83%	13.64%
Other Income/Expense, Net	$28.00M	$32.00M	$18.00M
YoY Change	-28.21%	6.67%	-37.93%
Pretax Income	$790.0M	$892.0M	$898.0M
YoY Change	0.89%	19.25%	21.85%
Income Tax	$279.0M	$333.0M	$336.0M
% Of Pretax Income	35.32%	37.33%	37.42%
Net Earnings	$511.0M	$559.0M	$562.0M
YoY Change	-0.39%	15.98%	20.86%
Net Earnings / Revenue	17.8%	18.49%	18.47%
Basic Earnings Per Share	$1.65	$1.80	$1.81
Diluted Earnings Per Share	$1.64	$1.79	$1.79
COMMON SHARES
Basic Shares Outstanding		309.4M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2014 Q4	2014 Q3	2014 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments	$973.0M	$1.432B	$1.667B
YoY Change	-37.67%	42.63%	183.99%
Cash & Equivalents	$973.0M	$1.432B	$1.667B
Short-Term Investments		$0.00	$0.00
Other Short-Term Assets	$347.0M	$50.00M	$226.0M
YoY Change	298.85%	-72.68%	18.32%
Inventory	$236.0M	$249.0M	$251.0M
Prepaid Expenses
Receivables	$1.055B	$1.103B	$1.122B
Other Receivables	$0.00	$0.00	$0.00
Total Short-Term Assets	$2.778B	$3.012B	$3.266B
YoY Change	-9.66%	20.77%	57.17%
LONG-TERM ASSETS
Property, Plant & Equipment	$27.69B	$27.23B	$26.93B
YoY Change	3.94%	3.09%	3.18%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$2.047B	$2.610B	$2.505B
YoY Change	2.25%	8.98%	5.87%
Other Assets	$49.00M	$354.0M	$342.0M
YoY Change	-84.88%	461.9%	442.86%
Total Long-Term Assets	$30.42B	$30.19B	$29.77B
YoY Change	3.45%	4.58%	4.37%
TOTAL ASSETS
Total Short-Term Assets	$2.778B	$3.012B	$3.266B
Total Long-Term Assets	$30.42B	$30.19B	$29.77B
Total Assets	$33.20B	$33.21B	$33.04B
YoY Change	2.21%	5.87%	7.96%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.233B	$1.387B	$1.245B
YoY Change	-2.53%	9.47%	5.51%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$100.0M	$0.00	$0.00
YoY Change	0.0%
Long-Term Debt Due	$2.000M	$2.000M	$433.0M
YoY Change	-99.55%	-99.55%	821.28%
Total Short-Term Liabilities	$1.780B	$2.082B	$2.368B
YoY Change	-22.78%	-10.72%	30.47%
LONG-TERM LIABILITIES
Long-Term Debt	$8.883B	$8.919B	$8.814B
YoY Change	-0.22%	4.94%	4.56%
Other Long-Term Liabilities	$1.312B	$1.084B	$1.122B
YoY Change	-9.14%	-49.95%	-48.95%
Total Long-Term Liabilities	$1.312B	$1.084B	$9.936B
YoY Change	-9.14%	-89.84%	-6.51%
TOTAL LIABILITIES
Total Short-Term Liabilities	$1.780B	$2.082B	$2.368B
Total Long-Term Liabilities	$1.312B	$1.084B	$9.936B
Total Liabilities	$20.79B	$20.77B	$20.96B
YoY Change	-1.9%	-1.44%	2.67%
SHAREHOLDERS EQUITY
Retained Earnings	$10.35B	$10.16B
YoY Change	10.8%
Common Stock
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$19.00M	$19.00M
YoY Change	0.0%
Treasury Stock Shares
Shareholders Equity	$12.41B	$12.44B	$12.08B
YoY Change
Total Liabilities & Shareholders Equity	$33.20B	$33.21B	$33.04B
YoY Change	2.21%	5.87%	7.96%

Cashflow Statement

Concept	2014 Q4	2014 Q3	2014 Q2
OPERATING ACTIVITIES
Net Income	$511.0M	$559.0M	$562.0M
YoY Change	-0.39%	15.98%	20.86%
Depreciation, Depletion And Amortization	$241.0M	$237.0M	$240.0M
YoY Change	2.55%	2.6%	5.26%
Cash From Operating Activities	$569.0M	$909.0M	$849.0M
YoY Change	-15.58%	1.22%	8.43%
INVESTING ACTIVITIES
Capital Expenditures	-$739.0M	-$570.0M	-$428.0M
YoY Change	47.5%	-2.73%	-15.25%
Acquisitions
YoY Change
Other Investing Activities	-$9.000M	-$37.00M	$35.00M
YoY Change	-62.5%	-254.17%	-45.31%
Cash From Investing Activities	-$748.0M	-$607.0M	-$393.0M
YoY Change	42.48%	8.01%	-10.88%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-280.0M	-537.0M	-311.0M
YoY Change	-190.32%	-980.33%	-27.17%
NET CHANGE
Cash From Operating Activities	569.0M	909.0M	849.0M
Cash From Investing Activities	-748.0M	-607.0M	-393.0M
Cash From Financing Activities	-280.0M	-537.0M	-311.0M
Net Change In Cash	-459.0M	-235.0M	145.0M
YoY Change	-200.0%	-159.19%	-270.59%
FREE CASH FLOW
Cash From Operating Activities	$569.0M	$909.0M	$849.0M
Capital Expenditures	-$739.0M	-$570.0M	-$428.0M
Free Cash Flow	$1.308B	$1.479B	$1.277B
YoY Change	11.32%	-0.34%	-0.85%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-12-31
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0000702165
CY2016Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	298198651	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015Q2	dei	Entity Public Float EntityPublicFloat	26243199266	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	NORFOLK SOUTHERN CORP
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2014Q4	nsc	Accumulated Depreciation Associated With Costs Of Obtaining Rights To Natural Resources AccumulatedDepreciationAssociatedWithCostsOfObtainingRightsToNaturalResources	196000000	USD
CY2015Q4	nsc	Accumulated Depreciation Associated With Costs Of Obtaining Rights To Natural Resources AccumulatedDepreciationAssociatedWithCostsOfObtainingRightsToNaturalResources	198000000	USD
CY2014Q4	nsc	Accumulated Depreciation Associated With Railway Property Recorded Pursuant To Capital Leases AccumulatedDepreciationAssociatedWithRailwayPropertyRecordedPursuantToCapitalLeases	-3000000	USD
CY2015Q4	nsc	Accumulated Depreciation Associated With Railway Property Recorded Pursuant To Capital Leases AccumulatedDepreciationAssociatedWithRailwayPropertyRecordedPursuantToCapitalLeases	-1000000	USD
CY2015	nsc	Amended Ltip Plan Award Granted As Option Or Stock Appreciation Right AmendedLtipPlanAwardGrantedAsOptionOrStockAppreciationRight	1	shares
CY2015	nsc	Amended Ltip Plan Award Granted As Other Than Option Or Stock Appreciation Right AmendedLtipPlanAwardGrantedAsOtherThanOptionOrStockAppreciationRight	1.61	shares
CY2015	nsc	Authority To Issue Debt Equity Securities AuthorityToIssueDebtEquitySecurities	600000000	USD
CY2015	nsc	Average Rate Of Imputed Interest On Capital Leases AverageRateOfImputedInterestOnCapitalLeases	0.063
CY2013	nsc	Charitable Contributions CharitableContributions	11000000	USD
CY2014	nsc	Charitable Contributions CharitableContributions	9000000	USD
CY2015	nsc	Charitable Contributions CharitableContributions	9000000	USD
CY2014Q4	nsc	Costs Of Obtaining Rights To Natural Resources CostsOfObtainingRightsToNaturalResources	336000000	USD
CY2015Q4	nsc	Costs Of Obtaining Rights To Natural Resources CostsOfObtainingRightsToNaturalResources	336000000	USD
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CY2015	nsc	Depreciation Studies Description DepreciationStudiesDescription	Our depreciation studies are conducted about every three years for equipment and every six years for track assets and other roadway property.
CY2015	nsc	Employees Covered By Collective Bargaining Agreements EmployeesCoveredByCollectiveBargainingAgreements	0.8
CY2014Q4	nsc	Environmental Cleanup Locations EnvironmentalCleanupLocations	146	location
CY2015Q4	nsc	Environmental Cleanup Locations EnvironmentalCleanupLocations	145	location
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CY2015Q4	nsc	Environmental Locations Representative Sample Liability EnvironmentalLocationsRepresentativeSampleLiability	42000000	USD
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CY2015Q4	us-gaap	Debt Instrument Unamortized Discount Premium Net DebtInstrumentUnamortizedDiscountPremiumNet	458000000	USD
CY2014Q4	us-gaap	Debt Longterm And Shortterm Combined Amount DebtLongtermAndShorttermCombinedAmount	8985000000	USD
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CY2014Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	116000000	USD
CY2015Q4	us-gaap	Deferred Compensation Liability Classified Noncurrent DeferredCompensationLiabilityClassifiedNoncurrent	117000000	USD
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CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	299000000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	292000000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	262000000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	294000000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	320000000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-8000000	USD
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CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	28000000	USD
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CY2015Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	603000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	-8650000000	USD
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CY2014Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	167000000	USD
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CY2015Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	568000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	45000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	65000000	USD
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CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	430000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	107000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals DeferredTaxAssetsTaxDeferredExpenseReservesAndAccruals	108000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	33000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	35000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	9223000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	9510000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	8817000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	9063000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	455000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	438000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	8768000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	9072000000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	2200000000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Accumulated Benefit Obligation DefinedBenefitPlanAccumulatedBenefitObligation	2200000000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Accumulated Postretirement Benefit Obligation1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnAccumulatedPostretirementBenefitObligation1	10000000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	1000000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	11000000	USD
CY2015	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	1000000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	2167000000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	2040000000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	244000000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Accumulated Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateAccumulatedBenefitObligation	252000000	USD
CY2014Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	274000000	USD
CY2015Q4	us-gaap	Defined Benefit Plan Pension Plans With Accumulated Benefit Obligations In Excess Of Plan Assets Aggregate Projected Benefit Obligation DefinedBenefitPlanPensionPlansWithAccumulatedBenefitObligationsInExcessOfPlanAssetsAggregateProjectedBenefitObligation	274000000	USD
CY2013	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	19000000	USD
CY2014	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	20000000	USD
CY2015	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	21000000	USD
CY2013	us-gaap	Depreciation Depreciation	922000000	USD
CY2014	us-gaap	Depreciation Depreciation	956000000	USD
CY2015	us-gaap	Depreciation Depreciation	1059000000	USD
CY2013	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	637000000	USD
CY2014	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	687000000	USD
CY2015	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	713000000	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.10
CY2014Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
CY2014Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.17
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CY2014Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.80
CY2014Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.65
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	6.44
CY2015Q1	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.01
CY2015Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.43
CY2015Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.50
CY2015Q4	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.21
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	5.13
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.04
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CY2014Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.79
CY2014Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.64
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	6.39
CY2015Q1	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.00
CY2015Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.41
CY2015Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.49
CY2015Q4	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.20
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	5.10
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CY2014	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.36
CY2015	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.36
CY2013	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2014	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2015	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	-0.01
CY2013	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.02
CY2014	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.03
CY2015	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.03
CY2013	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	0.00
CY2014	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	-0.01
CY2015	us-gaap	Effective Income Tax Rate Reconciliation Tax Settlements State And Local EffectiveIncomeTaxRateReconciliationTaxSettlementsStateAndLocal	-0.01
CY2013	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	93000000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	93000000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	29000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	18000000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	14000000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	13000000	USD
CY2013	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	31000000	USD
CY2014	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	26000000	USD
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	7000000	USD
CY2015Q4	us-gaap	Equity Method Investment Difference Between Carrying Amount And Underlying Equity EquityMethodInvestmentDifferenceBetweenCarryingAmountAndUnderlyingEquity	-526000000	USD
CY2014Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2047000000	USD
CY2015Q4	us-gaap	Equity Method Investments EquityMethodInvestments	2102000000	USD
CY2013	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	38000000	USD
CY2014	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	37000000	USD
CY2015	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	14000000	USD
CY2013	us-gaap	Fuel Costs FuelCosts	1613000000	USD
CY2014	us-gaap	Fuel Costs FuelCosts	1574000000	USD
CY2015	us-gaap	Fuel Costs FuelCosts	934000000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	101000000	USD
CY2014	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	13000000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Assets GainLossOnDispositionOfAssets	55000000	USD
CY2013	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	104000000	USD
CY2014	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	13000000	USD
CY2015	us-gaap	Gain Loss On Disposition Of Assets1 GainLossOnDispositionOfAssets1	30000000	USD
CY2015Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	7000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2965000000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3134000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	2442000000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	42000000	USD
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CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	0	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1055000000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1134000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	886000000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1038000000	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1097000000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	855000000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-41000000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-31000000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Reconciling Items IncomeTaxReconciliationOtherReconcilingItems	-27000000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	69000000	USD
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	88000000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	72000000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	-11000000	USD
CY2014	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	-20000000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Settlements State And Local IncomeTaxReconciliationTaxSettlementsStateAndLocal	-14000000	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	735000000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1102000000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	386000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-85000000	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	31000000	USD
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CY2014	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	13000000	USD
CY2015	us-gaap	Increase Decrease In Materials And Supplies IncreaseDecreaseInMaterialsAndSupplies	35000000	USD
CY2013	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	5000000	USD
CY2014	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	260000000	USD
CY2015	us-gaap	Increase Decrease In Other Current Assets IncreaseDecreaseInOtherCurrentAssets	-192000000	USD
CY2013	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5000000	USD
CY2014	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	53000000	USD
CY2015	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	-183000000	USD
CY2013	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	18000000	USD
CY2014	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	19000000	USD
CY2015	us-gaap	Interest Costs Capitalized InterestCostsCapitalized	21000000	USD
CY2013	us-gaap	Interest Costs Incurred InterestCostsIncurred	543000000	USD
CY2014	us-gaap	Interest Costs Incurred InterestCostsIncurred	564000000	USD
CY2015	us-gaap	Interest Costs Incurred InterestCostsIncurred	566000000	USD
CY2013	us-gaap	Interest Expense InterestExpense	525000000	USD
CY2014	us-gaap	Interest Expense InterestExpense	545000000	USD
CY2015	us-gaap	Interest Expense InterestExpense	545000000	USD
CY2013	us-gaap	Interest Expense Other InterestExpenseOther	12000000	USD
CY2014	us-gaap	Interest Expense Other InterestExpenseOther	12000000	USD
CY2015	us-gaap	Interest Expense Other InterestExpenseOther	4000000	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	492000000	USD
CY2014	us-gaap	Interest Paid Net InterestPaidNet	522000000	USD
CY2015	us-gaap	Interest Paid Net InterestPaidNet	518000000	USD
CY2014Q4	us-gaap	Interest Payable Current InterestPayableCurrent	118000000	USD
CY2015Q4	us-gaap	Interest Payable Current InterestPayableCurrent	123000000	USD
CY2013	us-gaap	Investment Income Interest InvestmentIncomeInterest	8000000	USD
CY2014	us-gaap	Investment Income Interest InvestmentIncomeInterest	9000000	USD
CY2015	us-gaap	Investment Income Interest InvestmentIncomeInterest	8000000	USD
CY2013	us-gaap	Labor And Related Expense LaborAndRelatedExpense	3002000000	USD
CY2014	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2897000000	USD
CY2015	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2911000000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	203000000	USD
CY2014	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	201000000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	195000000	USD
CY2014Q4	us-gaap	Liabilities Liabilities	20792000000	USD
CY2015Q4	us-gaap	Liabilities Liabilities	22072000000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	33200000000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	34260000000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	1780000000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	2231000000	USD
CY2013	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	25000000	USD
CY2014	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	24000000	USD
CY2015	us-gaap	Life Insurance Corporate Or Bank Owned Change In Value LifeInsuranceCorporateOrBankOwnedChangeInValue	-1000000	USD
CY2014Q4	us-gaap	Long Term Debt LongTermDebt	8885000000	USD
CY2015Q4	us-gaap	Long Term Debt LongTermDebt	9893000000	USD
CY2014Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	8883000000	USD
CY2015Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	9393000000	USD
CY2014Q4	us-gaap	Long Term Debt And Capital Lease Obligations Current LongTermDebtAndCapitalLeaseObligationsCurrent	2000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	51000000	USD
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CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	314000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	585000000	USD
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CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	550000000	USD
CY2014Q4	us-gaap	Long Term Investments LongTermInvestments	2679000000	USD
CY2015Q4	us-gaap	Long Term Investments LongTermInvestments	2572000000	USD
CY2015	us-gaap	Long Term Purchase Commitment Amount LongTermPurchaseCommitmentAmount	909000000	USD
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CY2014Q4	us-gaap	Loss Contingency Accrual Carrying Value Noncurrent LossContingencyAccrualCarryingValueNoncurrent	199000000	USD
CY2015Q4	us-gaap	Loss Contingency Accrual Carrying Value Noncurrent LossContingencyAccrualCarryingValueNoncurrent	191000000	USD
CY2014Q4	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	236000000	USD
CY2015Q4	us-gaap	Materials Supplies And Other MaterialsSuppliesAndOther	271000000	USD
CY2013	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	41000000	USD
CY2014	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	36000000	USD
CY2015	us-gaap	Multiemployer Plan Period Contributions MultiemployerPlanPeriodContributions	32000000	USD
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CY2014	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-1320000000	USD
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CY2013	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-1894000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-2002000000	USD
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CY2013	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	3078000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	2852000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	2877000000	USD
CY2013	us-gaap	Operating Expenses OperatingExpenses	7988000000	USD
CY2014	us-gaap	Operating Expenses OperatingExpenses	8049000000	USD
CY2015	us-gaap	Operating Expenses OperatingExpenses	7627000000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	3257000000	USD
CY2014Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	667000000	USD
CY2014Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	1019000000	USD
CY2014Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	998000000	USD
CY2014Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	891000000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	3575000000	USD
CY2015Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	606000000	USD
CY2015Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	814000000	USD
CY2015Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	822000000	USD
CY2015Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	642000000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	2884000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	664000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	77000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	50000000	USD
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-106000000	USD
CY2014	us-gaap	Operating Leases Rent Expense Minimum Rentals OperatingLeasesRentExpenseMinimumRentals	109000000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-240000000	USD
CY2013	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	627000000	USD
CY2013	us-gaap	Operating Leases Rent Expense Minimum Rentals OperatingLeasesRentExpenseMinimumRentals	121000000	USD
CY2014	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	318000000	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1075000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	65000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	73000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	348000000	USD
CY2013	us-gaap	Operating Leases Rent Expense Contingent Rentals OperatingLeasesRentExpenseContingentRentals	82000000	USD
CY2014	us-gaap	Operating Leases Rent Expense Contingent Rentals OperatingLeasesRentExpenseContingentRentals	92000000	USD
CY2015	us-gaap	Operating Leases Rent Expense Contingent Rentals OperatingLeasesRentExpenseContingentRentals	84000000	USD
CY2015	us-gaap	Operating Leases Rent Expense Minimum Rentals OperatingLeasesRentExpenseMinimumRentals	111000000	USD
CY2014Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	96000000	USD
CY2015Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	98000000	USD
CY2014Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	148000000	USD
CY2015Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	132000000	USD
CY2014Q4	us-gaap	Other Assets Current OtherAssetsCurrent	347000000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	194000000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	49000000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	63000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-38000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-72000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	1164000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-23000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-76000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	728000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-17000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-47000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-1122000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	15000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	76000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	436000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-6000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-29000000	USD
CY2014Q4	us-gaap	Other Investments OtherInvestments	162000000	USD
CY2015Q4	us-gaap	Other Investments OtherInvestments	162000000	USD
CY2014Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	228000000	USD
CY2015Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	237000000	USD
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1312000000	USD
CY2015Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1385000000	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	233000000	USD
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	104000000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	103000000	USD
CY2013	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	10000000	USD
CY2014	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-134000000	USD
CY2015	us-gaap	Other Operating Activities Cash Flow Statement OtherOperatingActivitiesCashFlowStatement	-111000000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-63000000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	637000000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	10191000000	USD
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	687000000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	713000000	USD
CY2013	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	130000000	USD
CY2014	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	104000000	USD
CY2015	us-gaap	Payments To Acquire Investments PaymentsToAcquireInvestments	5000000	USD
CY2013	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	1971000000	USD
CY2014	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2118000000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	2385000000	USD
CY2014Q4	us-gaap	Prepaid Taxes PrepaidTaxes	248000000	USD
CY2015Q4	us-gaap	Prepaid Taxes PrepaidTaxes	51000000	USD
CY2013	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	989000000	USD
CY2014	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	200000000	USD
CY2015	us-gaap	Proceeds From Debt Net Of Issuance Costs ProceedsFromDebtNetOfIssuanceCosts	1185000000	USD
CY2013	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	144000000	USD
CY2014	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	114000000	USD
CY2015	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	63000000	USD
CY2014	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	200000000	USD
CY2015	us-gaap	Proceeds From Short Term Debt ProceedsFromShortTermDebt	100000000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	1910000000	USD
CY2014Q1	us-gaap	Profit Loss ProfitLoss	368000000	USD
CY2014Q2	us-gaap	Profit Loss ProfitLoss	562000000	USD
CY2014Q3	us-gaap	Profit Loss ProfitLoss	559000000	USD
CY2014Q4	us-gaap	Profit Loss ProfitLoss	511000000	USD
CY2014	us-gaap	Profit Loss ProfitLoss	2000000000	USD
CY2015Q1	us-gaap	Profit Loss ProfitLoss	310000000	USD
CY2015Q2	us-gaap	Profit Loss ProfitLoss	433000000	USD
CY2015Q3	us-gaap	Profit Loss ProfitLoss	452000000	USD
CY2015Q4	us-gaap	Profit Loss ProfitLoss	361000000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	1556000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	38508000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	40470000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	27694000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	28992000000	USD
CY2014	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-21000000	USD
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-25000000	USD
CY2013	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	61000000	USD
CY2014	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	75000000	USD
CY2015	us-gaap	Rental Income Nonoperating RentalIncomeNonoperating	80000000	USD
CY2013	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	250000000	USD
CY2014	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	645000000	USD
CY2015	us-gaap	Repayments Of Debt And Capital Lease Obligations RepaymentsOfDebtAndCapitalLeaseObligations	102000000	USD
CY2014	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	200000000	USD
CY2015	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	100000000	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	10348000000	USD
CY2013	us-gaap	Revenues Revenues	11245000000	USD
CY2014Q1	us-gaap	Revenues Revenues	2689000000	USD
CY2014Q2	us-gaap	Revenues Revenues	3042000000	USD
CY2014Q3	us-gaap	Revenues Revenues	3023000000	USD
CY2014Q4	us-gaap	Revenues Revenues	2870000000	USD
CY2014	us-gaap	Revenues Revenues	11624000000	USD
CY2015Q1	us-gaap	Revenues Revenues	2567000000	USD
CY2015Q2	us-gaap	Revenues Revenues	2713000000	USD
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y5M
CY2015	us-gaap	Sharebased Compensation Shares Authorized Under Stock Option Plans Exercise Price Range Exercisable Options Weighted Average Remaining Contractual Term2 SharebasedCompensationSharesAuthorizedUnderStockOptionPlansExercisePriceRangeExercisableOptionsWeightedAverageRemainingContractualTerm2	P3Y9M18D
CY2015Q3	us-gaap	Revenues Revenues	2713000000	USD
CY2015Q4	us-gaap	Revenues Revenues	2518000000	USD
CY2015	us-gaap	Revenues Revenues	10511000000	USD
CY2013	us-gaap	Royalty Income Nonoperating RoyaltyIncomeNonoperating	44000000	USD
CY2014	us-gaap	Royalty Income Nonoperating RoyaltyIncomeNonoperating	28000000	USD
CY2015	us-gaap	Royalty Income Nonoperating RoyaltyIncomeNonoperating	14000000	USD
CY2013	us-gaap	Royalty Revenue From Coal RoyaltyRevenueFromCoal	50000000	USD
CY2014	us-gaap	Royalty Revenue From Coal RoyaltyRevenueFromCoal	33000000	USD
CY2015	us-gaap	Royalty Revenue From Coal RoyaltyRevenueFromCoal	19000000	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.3
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.27
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Maximum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMaximum	0.27
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.24
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.23
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate Minimum ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRateMinimum	0.19
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0188
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0279
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.0183
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.26
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.25
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Weighted Average Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageVolatilityRate	0.25
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	3420586	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	53.69
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	106000000	USD
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	106000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	27000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriod	18710	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Forfeitures And Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsForfeituresAndExpirationsInPeriodWeightedAverageExercisePrice	86.70
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriod	825210	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	122000000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5831317	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	6048736	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	61.57
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	67.90
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	52.99
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	102.38
CY2015Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	106000000	USD
CY2014	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2009461	shares
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	589081	shares
CY2014Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	100000000	USD
CY2015Q4	us-gaap	Short Term Borrowings ShortTermBorrowings	200000000	USD
CY2014Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0128
CY2015Q4	us-gaap	Short Term Debt Weighted Average Interest Rate ShortTermDebtWeightedAverageInterestRate	0.0148
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	2570088	shares
CY2013	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	155000000	USD
CY2014	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	144000000	USD
CY2015	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	62000000	USD
CY2012Q3	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	50000000	shares
CY2013	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	8300000	shares
CY2014	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	3100000	shares
CY2015	us-gaap	Stock Repurchased And Retired During Period Shares StockRepurchasedAndRetiredDuringPeriodShares	11300000	shares
CY2013	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	627000000	USD
CY2014	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	318000000	USD
CY2015	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1100000000	USD
CY2015	us-gaap	Stock Repurchased And Retired During Period Value StockRepurchasedAndRetiredDuringPeriodValue	1075000000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	9760000000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	11289000000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	12408000000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	12188000000	USD
CY2014	us-gaap	Stockholders Equity Other StockholdersEquityOther	3000000	USD
CY2015	us-gaap	Stockholders Equity Other StockholdersEquityOther	3000000	USD
CY2014Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Carrying Amount SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount	162000000	USD
CY2015Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Carrying Amount SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesCarryingAmount	162000000	USD
CY2014Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Fair Value SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue	193000000	USD
CY2015Q4	us-gaap	Summary Of Investments Other Than Investments In Related Parties Fair Value SummaryOfInvestmentsOtherThanInvestmentsInRelatedPartiesFairValue	190000000	USD
CY2013	us-gaap	Taxes Other TaxesOther	10000000	USD
CY2014	us-gaap	Taxes Other TaxesOther	9000000	USD
CY2015	us-gaap	Taxes Other TaxesOther	10000000	USD
CY2014Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	217000000	USD
CY2015Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	203000000	USD
CY2014Q4	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	782000000	USD
CY2015Q4	us-gaap	Transfers Accounted For As Secured Borrowings Assets Carrying Amount TransfersAccountedForAsSecuredBorrowingsAssetsCarryingAmount	653000000	USD
CY2014Q4	us-gaap	Treasury Stock Number Of Shares Held TreasuryStockNumberOfSharesHeld	20320777	shares
CY2015Q4	us-gaap	Treasury Stock Number Of Shares Held TreasuryStockNumberOfSharesHeld	20320777	shares
CY2014Q4	us-gaap	Treasury Stock Value TreasuryStockValue	19000000	USD
CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	19000000	USD
CY2011Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	33000000	USD
CY2012Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	40000000	USD
CY2013Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	44000000	USD
CY2014Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	41000000	USD
CY2015Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	47000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	1000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	5000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	65000000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	61000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	25000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	8000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	34000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	6000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	4000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	1000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	6000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	2000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	1000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	1000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Expense UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense	-3000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	2000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	1000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	17000000	USD
CY2014	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	1000000	USD
CY2015	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	2000000	USD
CY2015	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;font-weight:bold;"> </font></div><div style="line-height:120%;font-size:11pt;"><font style="font-family:inherit;font-size:11pt;">The preparation of financial statements in accordance with U.S. Generally Accepted Accounting Principles (GAAP) requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period.  We periodically review our estimates, including those related to the recoverability and useful lives of assets, as well as liabilities for litigation, environmental remediation, casualty claims, income taxes and pension and other postretirement benefits.  Changes in facts and circumstances may result in revised estimates.</font></div></div>

Files In Submission

Name	View Source	Status
0000702165-16-000162-index-headers.html	Edgar Link	pending
0000702165-16-000162-index.html	Edgar Link	pending
0000702165-16-000162.txt	Edgar Link	pending
0000702165-16-000162-xbrl.zip	Edgar Link	pending
FilingSummary.xml	Edgar Link	unprocessable
Financial_Report.xlsx	Edgar Link	pending
nsc-20151231.xml	Edgar Link	completed
nsc-20151231.xsd	Edgar Link	pending
nsc-20151231_cal.xml	Edgar Link	unprocessable
nsc-20151231_def.xml	Edgar Link	unprocessable
nsc-20151231_lab.xml	Edgar Link	unprocessable
nsc-20151231_pre.xml	Edgar Link	unprocessable
nsc10-kexhibit10ggg1.htm	Edgar Link	pending
nsc10-kexhibit10hh1.htm	Edgar Link	pending
nsc10-kexhibit10hhh1.htm	Edgar Link	pending
nsc10-kexhibit10iii1.htm	Edgar Link	pending
nsc10-kexhibit10jjj1.htm	Edgar Link	pending
nsc10-kexhibit10ooo1.htm	Edgar Link	pending
nsc10-kexhibit121.htm	Edgar Link	pending
nsc10-kexhibit211.htm	Edgar Link	pending
nsc10-kexhibit231.htm	Edgar Link	pending
nsc10-kexhibit31a1.htm	Edgar Link	pending
nsc10-kexhibit31b1.htm	Edgar Link	pending
nsc10-kexhibit321.htm	Edgar Link	pending
nsc10-kexhibit991.htm	Edgar Link	pending
nsc1231201510-k.htm	Edgar Link	pending
nslogo2015.jpg	Edgar Link	pending
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report.css	Edgar Link	pending
Show.js	Edgar Link	pending
stylizedsystemmap2015.jpg	Edgar Link	pending

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2014 Q4 Form 10-K Financial Statement

#000070216516000162 Filed on February 08, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NSC NORFOLK SOUTHERN CORP Stock $nsc

2014 Q4 Form 10-K Financial Statement

#000070216516000162 Filed on February 08, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$NSC
NORFOLK SOUTHERN CORP Stock $nsc