2.2.0.7 true Consolidated Statements of Cash Flows (Unaudited) (USD $) 0130 - Statement - Consolidated Statements of Cash Flows (Unaudited) true false In Millions false false 1 USD true false false false us-gaap_SuccessorMember us-gaap_StatementScenarioAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_SuccessorMember us-gaap_StatementScenarioAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ false 2 USD true false false false us-gaap_PredecessorMember us-gaap_StatementScenarioAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PredecessorMember us-gaap_StatementScenarioAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 USDEPS Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Shares Standard http://www.xbrl.org/2003/instance shares xbrli 0 $ false 3 USD true false false false us-gaap_PredecessorMember us-gaap_StatementScenarioAxis xbrldi http://xbrl.org/2006/xbrldi us-gaap_PredecessorMember us-gaap_StatementScenarioAxis explicitMember USD Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Pure Standard http://www.xbrl.org/2003/instance pure xbrli 0 $ 5 OPERATING ACTIVITIES 3 us-gaap_NetCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false xbrli:stringItemType string The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities include all transactions and events that are not defined as investing or financing activities. Operating activities generally involve producing and delivering goods and providing services. Cash flows from operating activities are generally the cash effects of transactions and other events that enter into the determination of net income. false 6 Net income 4 us-gaap_NetIncomeLoss us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 true true false false 885000000 885 true false false 2 true true false false 224000000 224 true false false 3 true true false false 697000000 697 true false false xbrli:monetaryItemType monetary The portion of consolidated profit or loss for the period, net of income taxes, which is attributable to the parent. If the entity does not present consolidated financial statements, the amount of profit or loss for the period, net of income taxes. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 19 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph d Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph A7 -Appendix A Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Research Bulletin (ARB) -Number 51 -Paragraph 38 -Subparagraph a Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 20 -Article 9 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 130 -Paragraph 10, 15 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 87-21 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28, 29, 30 false 7 Adjustments to reconcile net income to net cash provided by operating activities: 4 us-gaap_AdjustmentsNoncashItemsToReconcileNetIncomeLossToCashProvidedByUsedInOperatingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 8 Depreciation and amortization 5 us-gaap_DepreciationAndAmortization us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 661000000 661 true false false 2 false true false false 192000000 192 true false false 3 false true false false 749000000 749 true false false xbrli:monetaryItemType monetary The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 false 9 Deferred income taxes 5 us-gaap_DeferredIncomeTaxExpenseBenefit us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 119000000 119 true false false 2 false true false false 127000000 127 true false false 3 false true false false 258000000 258 true false false xbrli:monetaryItemType monetary The component of income tax expense for the period representing the net change in the entity's deferred tax assets and liabilities pertaining to continuing operations. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 6 -Section I -Subsection 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 45 -Subparagraph b Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 109 -Paragraph 289 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Article 4 false 10 Long-term casualty and environmental liabilities, net 5 bni_LongTermCasualtyAndEnvironmentalLiabilitiesNet bni false debit duration The net change during the reporting period in the amount of noncurrent costs accrued for casualty, environmental and other... false false false false false false false false false false false verboselabel false 1 false true false false -59000000 -59 true false false 2 false true false false -2000000 -2 true false false 3 false true false false -30000000 -30 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the amount of noncurrent costs accrued for casualty, environmental and other loss contingencies. No authoritative reference available. false 11 Contribution to defined benefit pension plan 5 us-gaap_PensionContributions us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -400000000 -400 true false false 2 false true false false 0 0 true false false 3 false true false false 0 0 true false false xbrli:monetaryItemType monetary The amount of cash or cash equivalents contributed by the entity to fund its pension plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 12 Other, net 5 bni_OtherNet bni false credit duration The net cash inflow (outflow) from other operating activities. This element is used when there is not a more specific and... false false false false false false false false false false true negated false 1 false true false false -121000000 -121 true false false 2 false true false false -78000000 -78 true false false 3 false true false false 15000000 15 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from other operating activities. This element is used when there is not a more specific and appropriate element in the taxonomy. No authoritative reference available. false 13 Changes in current assets and liabilities: 5 us-gaap_IncreaseDecreaseInOperatingCapitalAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 14 Accounts receivable, net 6 us-gaap_IncreaseDecreaseInAccountsReceivable us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -159000000 -159 true false false 2 false true false false -21000000 -21 true false false 3 false true false false 88000000 88 true false false xbrli:monetaryItemType monetary The net change during the reporting period in amount due within one year (or one business cycle) from customers for the credit sale of goods and services. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 15 Change in accounts receivable sales program 6 bni_CashFlowImpactFromAccountsReceivableSalesProgramClassifiedAsOperatingActivities bni false credit duration Cash flow impact from Accounts Receivable Sales Program, classified as Operating Activities. false false false false false false false false false false true negated false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false true false false -50000000 -50 true false false xbrli:monetaryItemType monetary Cash flow impact from Accounts Receivable Sales Program, classified as Operating Activities. No authoritative reference available. false 16 Material and supplies 6 bni_IncreaseDecreaseInMaterialsAndSupplies bni false credit duration The net change during the reporting period in the aggregate value of all materials and supplies held by the reporting entity,... false false false false false false false false false false true negated false 1 false true false false 27000000 27 true false false 2 false true false false 3000000 3 true false false 3 false true false false -9000000 -9 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the aggregate value of all materials and supplies held by the reporting entity, associated with underlying transactions that are classified as operating activities. No authoritative reference available. false 17 Other current assets 6 us-gaap_IncreaseDecreaseInOtherOperatingAssets us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -11000000 -11 true false false 2 false true false false -123000000 -123 true false false 3 false true false false -146000000 -146 true false false xbrli:monetaryItemType monetary The net change during the reporting period in other operating assets not otherwise defined in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 false 18 Accounts payable and other current liabilities 6 us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 436000000 436 true false false 2 false true false false -258000000 -258 true false false 3 false true false false -50000000 -50 true false false xbrli:monetaryItemType monetary The net change during the reporting period in the aggregate amount of obligations and expenses incurred but not paid. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 true 19 Net cash provided by operating activities 5 us-gaap_NetCashProvidedByUsedInOperatingActivities us-gaap true na duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 1378000000 1378 true false false 2 false true false false 64000000 64 true false false 3 false true false false 1522000000 1522 true false false xbrli:monetaryItemType monetary The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 20 INVESTING ACTIVITIES 3 us-gaap_NetCashProvidedByUsedInInvestingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 21 Capital expenditures excluding equipment 4 bni_CapitalExpendituresExcludingEquipment bni false credit duration The cash outflow associated with the acquisition of long-lived, physical assets, excluding equipment, that are used in the... false false false false false false false false false false true negated false 1 false true false false -741000000 -741 true false false 2 false true false false -137000000 -137 true false false 3 false true false false -1082000000 -1082 true false false xbrli:monetaryItemType monetary The cash outflow associated with the acquisition of long-lived, physical assets, excluding equipment, that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. No authoritative reference available. false 22 Acquisition of equipment 4 bni_AcquisitionOfEquipment bni false credit duration The cash outflow associated with the acquisition of equipment which includes locomotive, freight cars and other equipment,... false false false false false false false false false false true negated false 1 false true false false -249000000 -249 true false false 2 false true false false -67000000 -67 true false false 3 false true false false -456000000 -456 true false false xbrli:monetaryItemType monetary The cash outflow associated with the acquisition of equipment which includes locomotive, freight cars and other equipment, some or all of which may be sold and leased back by the Company through either an operating or capital lease. No authoritative reference available. false 23 Proceeds from sale of equipment financed 4 us-gaap_SaleLeasebackTransactionGrossProceeds us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false true false false 368000000 368 true false false xbrli:monetaryItemType monetary The gross proceeds received from the asset(s) sold in connection with the transaction involving the sale of property to another party and the lease back to the seller. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 98 -Section Appendix A -Paragraph 28, 29 false 24 Construction costs for facility financing obligation 4 bni_ConstructionCostsForFacilityFinancingObligation bni false credit duration Payments for construction costs of a facility that the Company intends to sell to a third party and subsequently lease back. false false false false false false false false false false true negated false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false true false false -31000000 -31 true false false xbrli:monetaryItemType monetary Payments for construction costs of a facility that the Company intends to sell to a third party and subsequently lease back. No authoritative reference available. false 25 Other, net 4 us-gaap_PaymentsForProceedsFromOtherInvestingActivities us-gaap true credit duration No definition available. false false false false false false false false false false true negatedtotal false 1 false true false false -235000000 -235 true false false 2 false true false false 68000000 68 true false false 3 false true false false -96000000 -96 true false false xbrli:monetaryItemType monetary The net cash outflow (inflow) from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 15 true 26 Net cash used for investing activities 4 us-gaap_NetCashProvidedByUsedInInvestingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false -1225000000 -1225 true false false 2 false true false false -136000000 -136 true false false 3 false true false false -1297000000 -1297 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from investing activity. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 27 FINANCING ACTIVITIES 3 us-gaap_NetCashProvidedByUsedInFinancingActivitiesAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 28 Net increase in commercial paper and bank borrowings 4 us-gaap_ProceedsFromRepaymentsOfShortTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false true false false 167000000 167 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) for borrowing having initial term of repayment within one year or the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 false 29 Proceeds from issuance of long-term debt 4 us-gaap_ProceedsFromIssuanceOfLongTermDebt us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 750000000 750 true false false 2 false true false false 0 0 true false false 3 false true false false 0 0 true false false xbrli:monetaryItemType monetary The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph b false 30 Payments on long-term debt 4 us-gaap_RepaymentsOfLongTermDebt us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false -99000000 -99 true false false 2 false true false false -30000000 -30 true false false 3 false true false false -322000000 -322 true false false xbrli:monetaryItemType monetary The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph b false 31 Dividends paid 4 bni_DividendsPaid bni false debit duration The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders or the parent... false false false false false false false false false false false verboselabel false 1 false true false false -250000000 -250 true false false 2 false true false false -226000000 -226 true false false 3 false true false false -273000000 -273 true false false xbrli:monetaryItemType monetary The cash outflow from the distribution of an entity's earnings in the form of dividends to common shareholders or the parent company. No authoritative reference available. false 32 Proceeds from stock options exercised 4 us-gaap_ProceedsFromStockOptionsExercised us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 21000000 21 true false false 3 false true false false 12000000 12 true false false xbrli:monetaryItemType monetary The cash inflow associated with the amount received from holders exercising their stock options. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph i Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 19 -Subparagraph a false 33 Purchase of BNSF common stock 4 us-gaap_PaymentsForRepurchaseOfCommonStock us-gaap true credit duration No definition available. false false false false false false false false false false true negated false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false true false false -12000000 -12 true false false xbrli:monetaryItemType monetary The cash outflow to reacquire common stock during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 20 -Subparagraph a false 34 Excess tax benefits from equity compensation plans 4 us-gaap_ExcessTaxBenefitFromShareBasedCompensationFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 9000000 9 true false false 3 false true false false 6000000 6 true false false xbrli:monetaryItemType monetary Reductions in the entity's income taxes that arise when compensation cost (from non-qualified share-based compensation) recognized on the entity's tax return exceeds compensation cost from share-based compensation recognized in financial statements. This element represents the cash inflow reported in the enterprise's financing activities. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph i Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 00-15 -Paragraph 3 false 35 Proceeds from facility financing obligation 4 bni_ProceedsFromFacilityFinancingObligation bni false debit duration Proceeds from the financing related to the construction of a facility that the Company intends to sell to a third party and... false false false false false false false false false false false verboselabel false 1 false true false false 0 0 true false false 2 false true false false 0 0 true false false 3 false true false false 51000000 51 true false false xbrli:monetaryItemType monetary Proceeds from the financing related to the construction of a facility that the Company intends to sell to a third party and subsequently lease back. No authoritative reference available. false 36 Other, net 4 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false -10000000 -10 true false false 2 false true false false 0 0 true false false 3 false true false false -3000000 -3 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 18, 19, 20 true 37 Net cash provided by (used for) financing activities 4 us-gaap_NetCashProvidedByUsedInFinancingActivities us-gaap true debit duration No definition available. false false false false false false false false false false false totallabel false 1 false true false false 391000000 391 true false false 2 false true false false -226000000 -226 true false false 3 false true false false -374000000 -374 true false false xbrli:monetaryItemType monetary The net cash inflow (outflow) from financing activity for the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 true 38 Increase (decrease) in cash and cash equivalents 3 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease us-gaap true na duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 544000000 544 true false false 2 false true false false -298000000 -298 true false false 3 false true false false -149000000 -149 true false false xbrli:monetaryItemType monetary The net change between the beginning and ending balance of cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 26 false 39 Cash and cash equivalents: 3 bni_CashAndCashEquivalentsAbstract bni false na duration Cash and cash equivalents. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false xbrli:stringItemType string Cash and cash equivalents. false 40 Beginning of period 4 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false true false false periodstartlabel false 1 false true false false 971000000 971 true false false 2 false true false false 1269000000 1269 true false false 3 false true false false 633000000 633 true false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 41 End of period 4 us-gaap_CashAndCashEquivalentsAtCarryingValue us-gaap true debit instant No definition available. false false false false false false false false false true false periodendlabel false 1 false true false false 1515000000 1515 true false false 2 false true false false 971000000 971 true false false 3 false true false false 484000000 484 true false false xbrli:monetaryItemType monetary Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents. Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7, 26 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 7 -Footnote 1 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 false 42 SUPPLEMENTAL CASH FLOW INFORMATION 3 us-gaap_SupplementalCashFlowInformationAbstract us-gaap true na duration No definition available. false false false false false true false false false false false verboselabel false 1 false false false false 0 0 true false false 2 false false false false 0 0 true false false 3 false false false false 0 0 true false false xbrli:stringItemType string No definition available. false 43 Interest paid, net of amounts capitalized 4 us-gaap_InterestPaidNet us-gaap true credit duration No definition available. false false false false false false false false false false false verboselabel false 1 false true false false 211000000 211 true false false 2 false true false false 97000000 97 true false false 3 false true false false 296000000 296 true false false xbrli:monetaryItemType monetary The amount of cash paid during the current period for interest owed on money borrowed, net of interest capitalized. 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Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 29 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 27 -Subparagraph f false 45 Non-cash asset financing 4 us-gaap_CapitalLeaseObligationsIncurred us-gaap true credit duration No definition available. false false false false false false false false false false false totallabel false 1 true true false false 19000000 19 true false false 2 true true false false 8000000 8 true false false 3 true true false false 433000000 433 true false false xbrli:monetaryItemType monetary The increase during the period in capital lease obligations due to entering into new capital leases. 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