Description of Organization and Business Operations, Initial Public Offering (Details)																			3 Months Ended		12 Months Ended
	Feb. 27, 2024 USD ($) Extension shares	Feb. 09, 2024 USD ($) $ / shares	Feb. 08, 2024 USD ($)	Feb. 02, 2024 USD ($)	Jan. 02, 2024	Dec. 02, 2023 USD ($)	Nov. 02, 2023	Oct. 02, 2023	Sep. 27, 2023 USD ($)	Sep. 05, 2023 USD ($)	Sep. 02, 2023 USD ($)	Aug. 02, 2023 USD ($)	Jul. 06, 2023 USD ($)	Jul. 02, 2023	Jun. 02, 2023 USD ($)	Apr. 18, 2023 USD ($)	Feb. 28, 2023 USD ($) Extension shares	Mar. 02, 2021 USD ($) $ / shares shares	Mar. 31, 2024 USD ($) Business shares	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Feb. 13, 2024 USD ($)	Dec. 31, 2023 USD ($) shares	Aug. 08, 2022
Initial Public Offering and Private Placement [Abstract]
Deferred offering costs associated with initial public offering																		$ 8,800,000
Deferred underwriting commissions																		5,200,000
Percentage of deferred underwriting commissions payable included in initial Business Combination																								50.00%
Net proceeds from Initial Public Offering and Private Placement deposited in Trust Account																		$ 149,500,000	$ 391,000	$ 420,000
Unit price, Proposed Public Offering and Private Placement (in dollars per unit) \| $ / shares																		$ 10
Percentage of Public Shares that would not be redeemed if Business Combination is not completed within Initial Combination Period																			100.00%
Number of times to extend period to consummate Business Combination \| Extension	11																9
Period of time for an extension to consummate Business Combination	1 month																1 month
Advance notice prior to applicable Termination Date	5 days																5 days
Temporary equity, carrying amount	$ 4,358,804																		$ 37,019,896		$ 151,528,894		$ 40,475,949
Minimum [Member]
Initial Public Offering and Private Placement [Abstract]
Number of operating businesses included in initial Business Combination \| Business																			1
Fair market value as percentage of net assets held in Trust Account included in initial Business Combination																			80.00%
Post-transaction ownership percentage of the target business																			50.00%
Percentage of Public Shares that can be redeemed without prior consent																			15.00%
Maximum [Member]
Initial Public Offering and Private Placement [Abstract]
Period to cease operations if Business Combination is not completed within Combination Period																			10 days
Interest from Trust Account that can be held to pay dissolution expenses																		$ 100,000
Extension period to complete business combination after Original Termination Date	12 months																36 months
Public Shares [Member]
Initial Public Offering and Private Placement [Abstract]
Shares issued (in shares) \| shares	3,300,016																3,690,831
Temporary equity, shares issued (in shares) \| shares	390,815																11,259,169
Private Placement Units [Member]
Initial Public Offering and Private Placement [Abstract]
Shares issued (in shares) \| shares	499,000																499,000	499,000
Share price (in dollars per share) \| $ / shares																		$ 10
Gross proceeds from private placement																		$ 5,000,000
Second Convertible Promissory Note [Member]
Initial Public Offering and Private Placement [Abstract]
Period of time for an extension to consummate Business Combination				1 month	1 month	1 month	1 month	1 month			1 month	1 month		1 month	1 month
Aggregate amount drawn										$ 165,000	$ 560,000	$ 140,000	$ 140,000		$ 140,000	$ 400,000
Principal amount																						$ 1,680,000
Loan for an aggregate deposit										$ 165,000	560,000	$ 140,000	$ 140,000		$ 140,000	$ 400,000
Second Convertible Promissory Note [Member] \| Maximum [Member]
Initial Public Offering and Private Placement [Abstract]
Aggregate amount drawn																	$ 1,380,000
Principal amount											$ 1,680,000
Loan for an aggregate deposit																	1,380,000
Third Convertible Promissory Note [Member]
Initial Public Offering and Private Placement [Abstract]
Period of time for an extension to consummate Business Combination						1 month	1 month	1 month
Aggregate amount drawn				$ 900,000		$ 420,000			$ 900,000										$ 900,000
Loan for an aggregate deposit				$ 900,000		$ 420,000			$ 900,000										900,000
Fourth Convertible Promissory Note [Member]
Initial Public Offering and Private Placement [Abstract]
Aggregate amount drawn																			540,000
Loan for an aggregate deposit																			540,000
Sponsor [Member]
Initial Public Offering and Private Placement [Abstract]
Net proceeds from Initial Public Offering and Private Placement deposited in Trust Account	$ 111,000
Aggregate amount drawn																			161,000
Loan for an aggregate deposit																			$ 161,000
Sponsor [Member] \| Maximum [Member]
Initial Public Offering and Private Placement [Abstract]
Aggregate amount drawn	1,221,000																1,680,000
Loan for an aggregate deposit	1,221,000																1,680,000
Sponsor [Member] \| Second Convertible Promissory Note [Member]
Initial Public Offering and Private Placement [Abstract]
Net proceeds from Initial Public Offering and Private Placement deposited in Trust Account	111,000																420,000
Sponsor [Member] \| Amended and Restated Memorandum [Member]
Initial Public Offering and Private Placement [Abstract]
Net proceeds from Initial Public Offering and Private Placement deposited in Trust Account	$ 111,000																$ 140,000
Percentage of ordinary shares issued and outstanding held by initial shareholders.	56.20%
Sponsor [Member] \| Fourth Convertible Promissory Note [Member]
Initial Public Offering and Private Placement [Abstract]
Net proceeds from Initial Public Offering and Private Placement deposited in Trust Account		$ 111,000
Aggregate amount drawn			$ 1,000,000
Loan for an aggregate deposit			$ 1,000,000
Conversion price (in dollars per share) \| $ / shares		$ 10
Class A Ordinary Shares [Member]
Initial Public Offering and Private Placement [Abstract]
Shares issued (in shares) \| shares	3,799,016																4,189,831
Temporary equity, carrying amount	$ 4,358,804																$ 115,071,882
Ordinary shares, shares issued (in shares) \| shares																			499,000				499,000
Ordinary shares, shares outstanding (in shares) \| shares																			499,000				499,000
Class A Ordinary Shares [Member] \| Sponsor [Member]
Initial Public Offering and Private Placement [Abstract]
Number of times to extend period to consummate Business Combination \| Extension	11
Period of time for an extension to consummate Business Combination	1 month
Advance notice prior to applicable Termination Date	5 days
Extension period to complete business combination after Original Termination Date	48 months
Class B Ordinary Shares [Member]
Initial Public Offering and Private Placement [Abstract]
Ordinary shares, shares issued (in shares) \| shares	3,737,500																3,737,500		3,737,500				3,737,500
Ordinary shares, shares outstanding (in shares) \| shares	3,737,500																3,737,500		3,737,500				3,737,500
Initial Public Offering [Member]
Initial Public Offering and Private Placement [Abstract]
Gross proceeds from initial public offering																					149,500,000
Initial Public Offering [Member] \| Public Shares [Member]
Initial Public Offering and Private Placement [Abstract]
Shares issued (in shares) \| shares																		14,950,000
Share price (in dollars per share) \| $ / shares																		$ 10
Gross proceeds from initial public offering																		$ 149,500,000
Initial Public Offering [Member] \| Class A Ordinary Shares [Member]
Initial Public Offering and Private Placement [Abstract]
Deferred offering costs associated with initial public offering																					$ 8,734,896
Over-Allotment Option [Member]
Initial Public Offering and Private Placement [Abstract]
Shares issued (in shares) \| shares																		1,950,000
Over-Allotment Option [Member] \| Public Shares [Member]
Initial Public Offering and Private Placement [Abstract]
Shares issued (in shares) \| shares																		1,950,000
Share price (in dollars per share) \| $ / shares																		$ 10

ARYA Sciences Acquisition Corp IV 10-Q