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v3.20.2

Long-Term and Other Debt - Loss on Debt Financing Transactions (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Debt Disclosure [Abstract] |  |  |  |
Repayment and cancellation of principal balance at premium |  | $ 50 |  |
Unamortized debt (premium) discount and deferred financing costs, net |  | 10 |  |
Loss on debt financing transactions | $ 0 | $ 60 | $ 0 | $ 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

X
- 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

X
- 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