| Cover Page Document | Mar. 23, 2020 |
| Entity Listings [Line Items] | |
| Entity Registrant Name | Avis Budget Group, Inc. |
| Entity Address, Address Line One | 6 Sylvan Way |
| Entity Address, City or Town | Parsippany, |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07054 |
| City Area Code | (973) |
| Entity Incorporation, State or Country Code | DE |
| Document Type | 8-K |
| Document Period End Date | Mar. 23, 2020 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity File Number | 001-10308 |
| Entity Tax Identification Number | 06-0918165 |
| Entity Emerging Growth Company | false |
| Amendment Flag | false |
| Entity Central Index Key | 0000723612 |
| Local Phone Number | 496-4700 |
| None [Member] | Rights [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Common Stock Purchase Rights |
| Security Exchange Name | NONE |
| No Trading Symbol Flag | true |
| Nasdaq [Member] | Common Stock [Member] | |
| Entity Listings [Line Items] | |
| Title of 12(b) Security | Common Stock, Par Value $0.01 |
| Trading Symbol | CAR |
| Security Exchange Name | NASDAQ |
