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Revenue Recognition - Summary of Activity Related to Contract and Contract Related Liabilities (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Disaggregation of Revenue [Line Items] |  |
Balance at January 1 | $ 251 |
Balance at December 31 | 614 | $ 251
Outstanding Chip Liability |  |
Disaggregation of Revenue [Line Items] |  |
Balance at January 1 | 34 | 10
Balance at December 31 | 48 | 34
Increase (decrease) | 14 | 24
Caesars Rewards |  |
Disaggregation of Revenue [Line Items] |  |
Balance at January 1 | 94 | 13
Balance at December 31 | 91 | 94
Increase (decrease) | (3) | 81
Customer Deposits and Other Deferred Revenue |  |
Disaggregation of Revenue [Line Items] |  |
Balance at January 1 | 310 | 172
Balance at December 31 | 560 | 310
Increase (decrease) | $ 250 | $ 138

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- Definition Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130531-203044 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=123360276&loc=SL49130532-203044 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123351226&loc=SL49130549-203045 + Details
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- Definition Amount of increase (decrease) in obligation to transfer good or service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 310 -Section 45 -Paragraph 11 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123371682&loc=d3e55415-109406 + Details
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