| Cover | Jan. 21, 2021 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 21, 2021 |
| Entity File Number | 001-39920 |
| Entity Registrant Name | Liberty Media Acquisition Corporation |
| Entity Central Index Key | 0001831992 |
| Entity Tax Identification Number | 85-3809075 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 12300 Liberty Boulevard |
| Entity Address, City or Town | Englewood |
| Entity Address, State or Province | CO |
| Entity Address, Postal Zip Code | 80112 |
| City Area Code | 720 |
| Local Phone Number | 875-5800 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one share of Series A common stock and one-fifth of one redeemable warrant [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Units, each consisting of one share of Series A common stock and one-fifth of one redeemable warrant |
| Trading Symbol | LMACU |
| Security Exchange Name | NASDAQ |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Series A common stock, par value $0.0001 per share |
| Trading Symbol | LMACA |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each whole warrant exercisable for one share of Series A common stock at an exercise price of $11.50 [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Redeemable warrants, each whole warrant exercisable for one share of Series A common stock at an exercise price of $11.50 |
| Trading Symbol | LMACW |
| Security Exchange Name | NASDAQ |
