Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2019

Revenue from Contract with Customer [Abstract]

Summary of Revenues by Type

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

	Three Months Ended September 30,				Nine Months Ended September 30,
	2019		2018		2019		2018
Gaming
Gaming operations	$	149	$	159	$	451	$	481
Gaming machine sales	168		167		452		480
Gaming systems	77		70		218		229
Table products	60		52		182		172
Total	$	454	$	448	$	1,303	$	1,362
Lottery
Instant products	$	150	$	142	$	440	$	442
Lottery systems	70		65		238		174
Total	$	220	$	207	$	678	$	616
SciPlay
Mobile	$	97	$	83	$	293	$	232
Web and other	19		22		60		70
Total	$	116	$	105	$	353	$	302
Digital
Sports and platform	$	29	$	21	$	85	$	67
Gaming and other	36		40		118		131
Total	$	65	$	61	$	203	$	198

Summary of Balances in Receivables and Contract Asset Accounts

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

	Nine Months Ended September 30,
	2019
Contract liability balance, beginning of period(1)	$	97
Liabilities recognized during the period	51
Amounts recognized in revenue from beginning balance	(30		)
Contract liability balance, end of period(1)	$	118
(1) Contract liabilities are included within Accrued liabilities and Other long-term liabilities in our consolidated balance sheets.

The following table summarizes our receivables and contract asset balances for the periods indicated:

	Receivables		Contract Assets(1)
Beginning of period balance	$	753	$	114
End of period balance, September 30, 2019	811		136
(1) Contract assets are included primarily within Prepaid expenses, deposits and other current assets in our consolidated balance sheets.