Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2021

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


	Three Months Ended June 30,				Six Months Ended June 30,
	2021		2020		2021		2020
Gaming
Gaming operations(1)	$	181	$	16	$	294	$	135
Gaming machine sales	100		53		155		145
Gaming systems	52		17		94		72
Table products	34		5		68		57
Total	$	367	$	91	$	611	$	409

Lottery
Instant products	$	175	$	133	$	337	$	269
Lottery systems	91		76		177		152
Total	$	266	$	209	$	514	$	421

SciPlay
Mobile	$	136	$	144	$	269	$	245
Web and other	18		22		36		39
Total	$	154	$	166	$	305	$	284

Digital
Sports and platform	$	38	$	26	$	71	$	64
Gaming and other	55		47		108		86
Total	$	93	$	73	$	179	$	150

(1) Gaming operations revenue for the three and six months ended June 30, 2021 benefited from $38 million and $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 following table summarizes the activity in our contract liabilities for the reporting period:


	Six Months Ended June 30,
	2021
Contract liability balance, beginning of period(1)	$	89
Liabilities recognized during the period	47
Amounts recognized in revenue from beginning balance	(43)
Contract liability balance, end of period(1)	$	93
(1) Contract liabilities are included within Accrued liabilities and Other long-term liabilities in our consolidated balance sheets.

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	$	636	$	127
End of period balance, June 30, 2021	656		113



(1) Contract assets are included primarily within Prepaid expenses, deposits and other current assets in our consolidated balance sheets.