Long-Term Debt Long-Term Debt - Redemption Price Promissory Note (Details) - Aruze USA, Inc. - USD ($) $ in Millions	Mar. 30, 2018	Feb. 18, 2012
Debt Instrument [Line Items]
Redemption price promissory note, principal amount		$ 1,940
Promissory Note \| Redemption Price Promissory Note With Former Stockholder and Related Party, Due February 18, 2022; Interest At 2%
Debt Instrument [Line Items]
Redemption price promissory note, principal amount	$ 1,940	$ 1,940

Face (par) amount of debt instrument at time of issuance.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=64930739&loc=d3e28878-108400

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28551-108399

Name:	us-gaap_DebtInstrumentFaceAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant