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Recent Transactions, Telavant Disposition (Details) - USD ($) $ in Thousands		2 Months Ended		3 Months Ended		8 Months Ended	9 Months Ended
	Dec. 14, 2023	Dec. 14, 2023	Dec. 31, 2022	Dec. 31, 2023	Dec. 31, 2022	Dec. 14, 2023	Dec. 31, 2023	Dec. 31, 2022
Consideration [Abstract]
Gain on sale of Telavant net assets				$ 5,348,410	$ 0		$ 5,348,410	$ 0
Telavant Holdings, Inc. [Member]
Consideration [Abstract]
Pretax loss		$ (27,300)	$ (89,400)			$ (71,100)
Telavant Holdings, Inc. [Member] | RSL [Member]
Telavant Disposition [Abstract]
Ownership percentage	75.00%	75.00%				75.00%
Consideration [Abstract]
Gain on sale of Telavant net assets				$ 5,300,000			$ 5,300,000
Telavant Holdings, Inc. [Member] | Pfizer [Member]
Telavant Disposition [Abstract]
Ownership percentage	25.00%	25.00%				25.00%
Roche Transaction [Member]
Consideration [Abstract]
Upfront cash payment	$ 7,100,000
Consideration to be received from milestone	150,000
Roche Transaction [Member] | RSL [Member]
Consideration [Abstract]
Upfront cash payment	5,234,373
Consideration to be received from milestone	110,000
Carrying amount of noncontrolling interest derecognized	87,500	$ 87,500				$ 87,500
Total consideration	5,321,873	5,321,873				5,321,873
Assets sold	3,253	3,253				3,253
Liabilities transferred	29,790	29,790				29,790
Net liabilities sold	(26,537)	$ (26,537)				$ (26,537)
Gain on sale of Telavant net assets	$ 5,348,410

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