Revenue Recognition (Tables)

6 Months Ended

Jun. 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 June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
Gaming
Gaming operations	$	150	$	160	$	302	$	321
Gaming machine sales	148		168		284		313
Gaming systems	67		84		141		159
Table products	62		59		122		121
Total	$	427	$	471	$	849	$	914
Lottery
Instant products	$	150	$	150	$	290	$	300
Lottery systems	81		57		168		109
Total	$	231	$	207	$	458	$	409
SciPlay
Mobile	$	98	$	77	$	195	$	149
Web and other	20		23		41		48
Total	$	118	$	100	$	236	$	197
Digital
Sports and platform	$	26	$	20	$	56	$	46
Gaming and other	43		47		83		91
Total	$	69	$	67	$	139	$	137

Summary of Balances in Receivables and Contract Asset Accounts

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

	Six Months Ended June 30,
	2019
Contract liability balance, beginning of period(1)	$	97
Liabilities recognized during the period	33
Amounts recognized in revenue from beginning balance	(30		)
Contract liability balance, end of period(1)	$	100
(1) Contract liabilities are included within Accrued liabilities and Other long-term liabilities in our June 30, 2019 consolidated balance sheet.

The following table summarizes our receivables and contract asset balances for the periods indicated (other than contract liabilities disclosed above):

	Receivables		Contract Assets(1)
Beginning of period balance	$	753	$	114
End of period balance, June 30, 2019	778		114
(1) Contract assets are included primarily within Prepaid expenses, deposits and other current assets in our June 30, 2019 consolidated balance sheet.