1.0.0.3 false CONSOLIDATED SUPPLEMENTAL STATEMENTS OF CASH FLOWS (USD $) In Millions false 1 $ false false Unit_1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit_2 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit_9 Standard http://www.xbrl.org/2003/instance shares xbrli 0 false 2 $ false false Unit_1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit_2 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit_9 Standard http://www.xbrl.org/2003/instance shares xbrli 0 false 3 $ false false Unit_1 Standard http://www.xbrl.org/2003/iso4217 USD iso4217 0 Unit_2 Divide http://www.xbrl.org/2003/iso4217 USD iso4217 http://www.xbrl.org/2003/instance shares xbrli 0 Unit_9 Standard http://www.xbrl.org/2003/instance shares xbrli 0 8 Investment securities 6 us-gaap_PaymentsForProceedsFromInvestmentsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 9 Purchases 7 us-gaap_PaymentsToAcquireShortTermInvestments us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 true true 0 0 false false 2 true true -30100000 -30 false false 3 true true -838500000 -838 false false No definition available. No authoritative reference available. false 10 Proceeds from sales 7 us-gaap_ProceedsFromSaleOfShortTermInvestments us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 117500000 118 false false 3 false true 986100000 986 false false No definition available. No authoritative reference available. true 11 Net 7 us-gaap_PaymentsForProceedsFromShortTermInvestments us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 0 0 false false 2 false true 87400000 87 false false 3 false true 147600000 148 false false No definition available. No authoritative reference available. true 12 Jackpot funding 7 us-gaap_PaymentsToAcquireInvestmentsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 13 Change in jackpot liabilities 8 us-gaap_IncreaseDecreaseInOtherOperatingLiabilities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true -89400000 -89 false false 2 false true -22300000 -22 false false 3 false true -47200000 -47 false false No definition available. No authoritative reference available. true 14 Jackpot annuity purchases 8 us-gaap_PaymentsToAcquireHeldToMaturitySecurities us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -13600000 -14 false false 2 false true -21400000 -21 false false 3 false true -35600000 -36 false false No definition available. No authoritative reference available. false 15 Jackpot annuity proceeds 8 us-gaap_ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 67900000 68 false false 2 false true 67100000 67 false false 3 false true 65000000 65 false false No definition available. No authoritative reference available. true 16 Net change in jackpot annuity investments 8 igt_PaymentsForProceedsFromSaleAndMaturityOfHeldToMaturityInvestments igt false credit duration monetary The net amount paid (received) by the reporting entity through acquisition, sale, maturitites of securites that had been... false false false false false false false false false 1 false true 54300000 54 false false 2 false true 45700000 46 false false 3 false true 29400000 29 false false The net amount paid (received) by the reporting entity through acquisition, sale, maturitites of securites that had been designated as held to maturity investments. No authoritative reference available. true 17 Net jackpot funding 8 igt_NetJackpotFunding igt false debit duration monetary Sum of operating and investing cash provided or used as a result of funding Wide Area Progressive jackpots for third party... false false false false false false false false false 1 false true -35100000 -35 false false 2 false true 23400000 23 false false 3 false true -17800000 -18 false false Sum of operating and investing cash provided or used as a result of funding Wide Area Progressive jackpots for third party customers. No authoritative reference available. true 18 Capital expenditures 7 us-gaap_ProceedsFromSaleMaturityAndCollectionsOfInvestmentsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 19 Property, plant and equipment 8 us-gaap_PaymentsToAcquirePropertyPlantAndEquipment us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -37400000 -37 false false 2 false true -92400000 -92 false false 3 false true -134100000 -134 false false No definition available. No authoritative reference available. false 20 Gaming operations equipment 8 us-gaap_PaymentsToAcquireOtherProductiveAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -180800000 -181 false false 2 false true -190600000 -191 false false 3 false true -194400000 -194 false false No definition available. No authoritative reference available. false 21 Intellectual property 8 us-gaap_PaymentsToAcquireIntangibleAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -38900000 -39 false false 2 false true -15100000 -15 false false 3 false true -15800000 -16 false false No definition available. No authoritative reference available. true 22 Total 8 us-gaap_PaymentsToAcquireProductiveAssets us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true -257400000 -257 false false 2 false true -298200000 -298 false false 3 false true -344300000 -344 false false No definition available. No authoritative reference available. true 23 Payments 6 us-gaap_PaymentsForProceedsFromBusinessesAndInterestInAffiliatesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 24 Interest 7 us-gaap_InterestPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 75000000 75 false false 2 false true 61300000 61 false false 3 false true 26700000 27 false false No definition available. No authoritative reference available. false 25 Income taxes 7 us-gaap_IncomeTaxesPaidNet us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 126100000 126 false false 2 false true 222500000 222 false false 3 false true 287600000 288 false false No definition available. No authoritative reference available. false 27 Non-cash investing and financing items: 5 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperationsAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 28 Accrued capital asset additions 6 us-gaap_CapitalExpendituresIncurredButNotYetPaid us-gaap true credit duration monetary No definition available. false false false false false false false false false 1 false true 4200000 4 false false 2 false true 8400000 8 false false 3 false true 9000000 9 false false No definition available. No authoritative reference available. false 29 Business acquisitions/purchase price adjustments 6 us-gaap_PaymentsToAcquireBusinessesAndInterestInAffiliatesAbstract us-gaap true na duration string No definition available. false false false false false true false false false 1 false false 0 0 false false 2 false false 0 0 false false 3 false false 0 0 false false No definition available. false 30 Fair value of assets 7 us-gaap_FairValueOfAssetsAcquired us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 false true 21800000 22 false false 2 false true 116900000 117 false false 3 false true 45800000 46 false false No definition available. No authoritative reference available. false 31 Fair value of liabilities 7 us-gaap_LiabilitiesAssumed us-gaap true debit duration monetary No definition available. false false false false false false false false false 1 true true 6000000 6 false false 2 true true 32600000 33 false false 3 true true 8600000 9 false false No definition available. No authoritative reference available. false false 3 23 false Millions UnKnown UnKnown false true