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v3.20.2

Long-Term and Other Debt - Loss on Debt Financing Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019
Debt Disclosure [Abstract] |  |  |  |
Repayment and cancellation of principal balance at premium | $ 0 | $ 0 | $ 0 | $ 50
Unamortized debt (premium) discount and deferred financing costs, net | 1 | 0 | 1 | 10
Loss on debt financing transactions | $ 1 | $ 0 | $ 1 | $ 60

X
- Definition Gain (Loss) On Debt Financing Transaction + References No definition available. + Details
Name: | sgms_GainLossOnDebtFinancingTransaction
Namespace Prefix: | sgms_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Write Off Of Deferred Debt Issuance Costs And Discount (Premium) + References No definition available. + Details
Name: | sgms_WriteOffOfDeferredDebtIssuanceCostsAndDiscountPremium
Namespace Prefix: | sgms_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Gross amount of debt extinguished. + References No definition available. + Details
Name: | us-gaap_ExtinguishmentOfDebtAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration