Revenue Recognition

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Revenue Recognition

The following table disaggregates revenues by type within each of our business segments:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Gaming
Gaming operations(1)	$	151	$	92	$	445	$	227
Gaming machine sales	95		71		249		216
Gaming systems	52		43		146		115
Table products	41		25		109		82
Total	$	339	$	231	$	949	$	640
SciPlay
Mobile	$	131	$	132	$	400	$	377
Web and other	16		19		52		58
Total	$	147	$	151	$	452	$	435
iGaming	$	53	$	50	$	171	$	144
(1) Gaming operations revenue for the nine months ended September 30, 2021 benefited from $44 million U.K. FOBT recovery received from certain U.K. customers related to a 2020 U.K. court ruling associated with overcharging of value-added tax for gaming operators that consequently reduced our net gaming revenues related to these customers and arrangements.

The amount of rental income revenue that is outside the scope of ASC 606 was $88 million and $270 million for the three and nine months ended September 30, 2021, respectively, and $62 million and $148 million for the three and nine months ended September 30, 2020, respectively.

Contract Liabilities and Other Disclosures

The following table summarizes the activity in our contract liabilities for the reporting period:

	Nine Months Ended September 30,
	2021
Contract liability balance, beginning of period(1)	$	27
Liabilities recognized during the period	26
Amounts recognized in revenue from beginning balance	(16)
Contract liability balance, end of period(1)	$	37
(1) Contract liabilities are included within Accrued liabilities and Other long-term liabilities in our consolidated balance sheets.

The timing of revenue recognition, billings and cash collections results in billed receivables, unbilled receivables (contract assets), and customer advances and deposits (contract liabilities) on our consolidated balance sheets. Other than contracts with customers with financing arrangements exceeding 12 months, revenue recognition is generally proximal to conversion to cash. The following table summarizes our balances in these accounts for the periods indicated (other than contract liabilities disclosed above):

	Receivables		Contract Assets(1)
Beginning of period balance	$	457	$	20
End of period balance, September 30, 2021	433		24
(1) Contract assets are included primarily within Prepaid expenses, deposits and other current assets in our consolidated balance sheets.

As of September 30, 2021, we did not have material unsatisfied performance obligations for contracts expected to be long-term or contracts for which we recognize revenue at an amount other than for which we have the right to invoice for goods or services delivered or performed.