Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_CapitalLeaseObligationsMember
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- Details

Name:	dei_LegalEntityAxis=czr_CaesarsEntertainmentResortPropertiesMember
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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SecuredDebtMember
Namespace Prefix:
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- Details

Name:	us-gaap_DebtInstrumentAxis=czr_TermLoanMember
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- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
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- Details

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- Details

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- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=czr_HorseshoeBaltimoreFFEFacilityMember
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- Details

Name:	us-gaap_DebtInstrumentAxis=czr_CromwellCreditFacilityMember
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Debt - Summary of Debt and Revolving Credit Facility Cash Flows from Financing Activities (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt	$ 0	$ 55	$ 120	$ 310	$ 4,436
Repayments of long-term debt and revolving credit facilities	$ (54)	$ (104)	(268)	(450)	$ (2,833)
Long-term Debt [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			0	0
Repayments of long-term debt and revolving credit facilities			(10)	(25)
Capital Lease Obligations [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			0	0
Repayments of long-term debt and revolving credit facilities			(5)	(10)
CERP \| Secured Debt [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			0	0
Repayments of long-term debt and revolving credit facilities			(25)	(25)
CERP \| Line of Credit [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			105	230
Repayments of long-term debt and revolving credit facilities			(145)	(330)
CGP \| Secured Debt [Member] \| Term Loan [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			0	0
Repayments of long-term debt and revolving credit facilities			(12)	(12)
CGP \| Secured Debt [Member] \| Revolving Credit Facility [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			15	80
Repayments of long-term debt and revolving credit facilities			(60)	(35)
CGP \| Secured Debt [Member] \| Horseshoe Baltimore Credit Facility [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			0	0
Repayments of long-term debt and revolving credit facilities			(3)	0
CGP \| Secured Debt [Member] \| Horseshoe Baltimore FF&E Facility [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			0	0
Repayments of long-term debt and revolving credit facilities			(5)	(3)
CGP \| Secured Debt [Member] \| Cromwell Credit Facility [Member] \| Variable Interest Entity, Primary Beneficiary [Member]
Debt Instrument [Line Items]
Proceeds from the issuance of long-term debt			0	0
Repayments of long-term debt and revolving credit facilities			$ (3)	$ (10)