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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES, Class A Ordinary Shares Subject to Possible Redemption (Q1) (Details) - USD ($)
3 Months Ended 5 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Dec. 31, 2020
Dec. 31, 2021
Dec. 31, 2020
Class A Ordinary Shares Subject to Possible Redemption [Abstract]          
Gross proceeds     $ 270,480,000 $ 0  
Class A ordinary shares issuance costs $ 0 $ (26,780) (509,869) (26,780)  
Class A ordinary shares subject to possible redemption $ 284,280,000   $ 278,760,000 $ 284,280,000 $ 278,760,000
Class A Ordinary Shares [Member]          
Class A Ordinary Shares Subject to Possible Redemption [Abstract]          
Ordinary shares, redemption (in shares) 27,600,000   27,600,000 27,600,000 27,600,000
Initial Public Offering [Member]          
Class A Ordinary Shares Subject to Possible Redemption [Abstract]          
Gross proceeds         $ 278,760,000
Initial Public Offering [Member] | Class A Ordinary Shares [Member]          
Class A Ordinary Shares Subject to Possible Redemption [Abstract]          
Class A ordinary shares issuance costs         (17,568,199)
Accretion of carrying value to redemption value       $ 5,520,000 33,465,447
Class A ordinary shares subject to possible redemption     $ 278,760,000 $ 284,280,000 278,760,000
Initial Public Offering [Member] | Public Warrants [Member]          
Class A Ordinary Shares Subject to Possible Redemption [Abstract]          
Proceeds allocated to Public Warrants         $ (15,897,248)