Debt Instrument, Additional Principal Borrowings

No definition available.

Name:	sgms_DebtInstrumentAdditionalPrincipalBorrowings
Namespace Prefix:	sgms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line Of Credit Facility, Additional Borrowing Capacity

+ References

No definition available.

+ Details

Name:	sgms_LineOfCreditFacilityAdditionalBorrowingCapacity
Namespace Prefix:	sgms_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

+ Details

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.19(b),22(b))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The cash outflow for a long-term debt where the holder has highest claim on the entity's asset in case of bankruptcy or liquidation during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585

+ Details

Name:	us-gaap_RepaymentsOfSeniorDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_DebtInstrumentAxis=sgms_SeniorSecuredNotesMaturing2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=sgms_SeniorSecuredNotesMaturing2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=sgms_SeniorUnsecuredNotesMaturing2026Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=sgms_SeniorSecuredCreditFacilityTermLoanB5Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DebtInstrumentAxis=sgms_SeniorSecuredNotesMaturing2022Member
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Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_DebtInstrumentAxis=sgms_SeniorSecuredCreditFacilityTermLoanB4Maturing2024Member
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Data Type:	na
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- Details

Name:	us-gaap_DebtInstrumentAxis=sgms_SeniorSecuredCreditFacilityLenderJoinderAgreementMaturing2020Member
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- Details

Name:	us-gaap_StatementScenarioAxis=us-gaap_ScenarioForecastMember
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- Details

Name:	us-gaap_VariableRateAxis=us-gaap_LondonInterbankOfferedRateLIBORMember
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Data Type:	na
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Long-Term and Other Debt - February 2018 Refinancing Transaction (Details)	Mar. 02, 2018 USD ($)	Feb. 14, 2018 USD ($)	Aug. 14, 2017 USD ($)	Oct. 18, 2020 USD ($)	Feb. 14, 2018 EUR (€)
Senior Secured Notes, maturing 2025 \| Subsequent event
Debt Instrument [Line Items]
Additional principal borrowings		$ 900,000,000.0
Senior Secured Notes, Maturing 2026 \| Subsequent event
Debt Instrument [Line Items]
Debt amount \| €					€ 325,000,000.0
Debt Instrument, interest rate, stated percentage		3.375%			3.375%
Senior Unsecured Notes, Maturing 2026 \| Subsequent event
Debt Instrument [Line Items]
Debt amount \| €					€ 250,000,000
Debt Instrument, interest rate, stated percentage		5.50%			5.50%
Senior Secured Credit Facility, Term Loan B-5 \| Subsequent event
Debt Instrument [Line Items]
Debt amount		$ 900,000,000.0
Senior Secured Notes, maturing 2022 \| Subsequent event
Debt Instrument [Line Items]
Repayments of senior debt		1,400,000,000
Senior Secured Term Loan B-4, maturing 2024
Debt Instrument [Line Items]
Debt amount			$ 3,282,800,000.0
Senior Secured Credit Facility, Lender Joinder Agreement, maturing 2020 \| Subsequent event
Debt Instrument [Line Items]
Additional borrowing capacity		24,000,000.0
Maximum revolving commitments		$ 620,200,000.0
Scenario, Forecast \| Senior Secured Notes, maturing 2022
Debt Instrument [Line Items]
Repayments of senior debt	$ 700,000,000
Scenario, Forecast \| Senior Secured Credit Facility, Lender Joinder Agreement, maturing 2020
Debt Instrument [Line Items]
Maximum revolving commitments				$ 445,700,000.0
LIBOR \| Senior Secured Credit Facility, Term Loan B-5 \| Subsequent event
Debt Instrument [Line Items]
Margin spread on debt		2.75%
LIBOR \| Senior Secured Term Loan B-4, maturing 2024
Debt Instrument [Line Items]
Margin spread on debt			3.25%