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Equity Investments - Northstar New Jersey (Details) - Northstar NJ | 12 Months Ended
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Dec. 31, 2020
Schedule of Equity Method Investments [Line Items] |
Incentive compensation cap, percentage of net income | 3.00%
Investee payment to third party cap, percentage of net income | 2.00%

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- Definition Equity Method Investment, Incentive Compensation Cap, Percentage of Net Income + References No definition available. + Details
Name: | sgms_EquityMethodInvestmentIncentiveCompensationCapPercentageofNetIncome
Namespace Prefix: | sgms_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Equity Method Investment, Investee Payment to Third Party Cap, Percentage of Net Income + References No definition available. + Details
Name: | sgms_EquityMethodInvestmentInvesteePaymenttoThirdPartyCapPercentageofNetIncome
Namespace Prefix: | sgms_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ScheduleOfEquityMethodInvestmentsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=sgms_NorthstarNewJerseyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |