Long-Term and Other Debt - Terms of Outstanding Debt (Details)	3 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($)	Dec. 31, 2020 USD ($)	Nov. 26, 2019 USD ($)	Nov. 20, 2019 USD ($)	Sep. 30, 2019 USD ($)	Mar. 19, 2019 USD ($)	Feb. 28, 2018 USD ($)	Feb. 14, 2018 USD ($)	Feb. 14, 2018 EUR (€)
Debt Instrument [Line Items]
Face Value		$ 9,407,000,000
SciPlay [Member] | Minimum
Debt Instrument [Line Items]
Debt Instrument, Restrictive Covenants, Total Net Leverage Ratio		2.50
SciPlay [Member] | Maximum
Debt Instrument [Line Items]
Debt Instrument, Restrictive Covenants, Total Net Leverage Ratio		4.00
Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
First lien leverage ratio, period one maximum		5.00
Debt Instrument, Redemption, Period One | SciPlay [Member]
Debt Instrument [Line Items]
First lien leverage ratio, period one maximum		2.50
Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
First lien leverage ratio, period one maximum		4.75
Debt Instrument, Redemption, Period Two | SciPlay [Member]
Debt Instrument [Line Items]
First lien leverage ratio, period one maximum		4.00
Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
First lien leverage ratio, period one maximum		4.50
Senior Secured Notes, maturing 2025 | Senior Notes
Debt Instrument [Line Items]
Debt amount							$ 460,000,000	$ 900,000,000
Face Value		$ 1,250,000,000
Senior Secured Euro Notes, maturing 2026 | Senior Notes
Debt Instrument [Line Items]
Debt amount | €									€ 325,000,000
Face Value		399,000,000
Senior Unsecured Euro Notes, Maturing 2026 | Senior Notes
Debt Instrument [Line Items]
Debt amount | €									€ 250,000,000
Face Value		306,000,000
Senior Unsecured Notes, Maturing 2026 [Member] | Senior Notes
Debt Instrument [Line Items]
Debt amount						$ 1,100,000,000
Debt Instrument, Repurchased Face Amount						$ 1,000,000,000
Face Value		1,100,000,000
Senior Unsecured Notes, Maturing 2028 [Member] | Senior Notes
Debt Instrument [Line Items]
Face Value		700,000,000	$ 700,000,000
Senior Unsecured Euro Notes, Maturing 2029 [Member] [Member] | Senior Notes
Debt Instrument [Line Items]
Face Value		500,000,000	500,000,000
Senior Unsecured Notes, maturing 2022 | Senior Notes
Debt Instrument [Line Items]
Face Value			1,200,000,000
Senior Subordinated Notes, Maturing 2020 [Member] | Senior Subordinated Notes
Debt Instrument [Line Items]
Face Value			$ 244,000,000
The Credit Agreement [Member] | Term Loan
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		4,060,000,000
The Credit Agreement [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 650,000,000
Senior Secured Term Loan B-4, maturing 2024 | Term Loan
Debt Instrument [Line Items]
Debt Instrument, Amortization Percentage		1.00%
Senior Secured Revolver, maturing 2018 | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Unused capacity, commitment fee percentage		0.50%
Line of Credit Facility, Unused Capacity, Commitment Fee, Step-down Percentage		0.375%
Revolving Credit Facility [Member] | Senior Notes
Debt Instrument [Line Items]
Debt amount				$ 650,000,000
Revolving Credit Facility [Member] | Senior Secured Credit Facility, Term Loan B-5, Maturing 2024 [Member] | Secured Debt
Debt Instrument [Line Items]
Face Value		$ 4,060,000,000
Letter of Credit [Member] | The Credit Agreement [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 350,000,000
Eurodollar [Member] | Senior Secured Credit Facility, Term Loan B-5, Maturing 2024 [Member] | Term Loan
Debt Instrument [Line Items]
Margin spread on debt		2.75%
Eurodollar [Member] | Senior Secured Credit Facility, Term Loan B-5, Maturing 2024 [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Margin spread on debt		3.00%
Base Rate | Senior Secured Credit Facility, Term Loan B-5, Maturing 2024 [Member] | Term Loan
Debt Instrument [Line Items]
Margin spread on debt		1.75%
Base Rate | Senior Secured Credit Facility, Term Loan B-5, Maturing 2024 [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Margin spread on debt		2.00%
IPO [Member] | Revolving Credit Facility [Member] | SciPlay Revolver, Maturing 2024 [Member] [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Commitment Fee Percentage	0.50%
Debt Instrument, Leverage Ratio	0.375%
IPO [Member] | Revolving Credit Facility [Member] | SciPlay Revolver, Maturing 2024 [Member] [Member] | Secured Debt
Debt Instrument [Line Items]
Debt amount		$ 150,000,000			$ 150,000,000
IPO [Member] | Letter of Credit [Member] | SciPlay Revolver, Maturing 2024 [Member] [Member]
Debt Instrument [Line Items]
Letters of Credit Outstanding, Amount	$ 15,000,000
IPO [Member] | Base Rate | Revolving Credit Facility [Member] | SciPlay Revolver, Maturing 2024 [Member] [Member]
Debt Instrument [Line Items]
Margin spread on debt	1.25%
IPO [Member] | London Interbank Offered Rate (LIBOR) [Member] | Revolving Credit Facility [Member] | SciPlay Revolver, Maturing 2024 [Member] [Member]
Debt Instrument [Line Items]
Margin spread on debt	2.25%
IPO [Member] | London Interbank Offered Rate (LIBOR), Leveraged Base Step Down [Member] | Revolving Credit Facility [Member] | SciPlay Revolver, Maturing 2024 [Member] [Member]
Debt Instrument [Line Items]
Margin spread on debt	0.25%
IPO [Member] | London Interbank Offered Rate (LIBOR), Leveraged Base Step Up [Member] | Revolving Credit Facility [Member] | SciPlay Revolver, Maturing 2024 [Member] [Member]
Debt Instrument [Line Items]
Margin spread on debt	0.25%
IPO [Member] | Base Rate, Step Down [Member] | Revolving Credit Facility [Member] | SciPlay Revolver, Maturing 2024 [Member] [Member]
Debt Instrument [Line Items]
Margin spread on debt	0.25%