Collaborative and Other Relationships - Profit Sharing (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Apr. 30, 2023
RITUXAN
Collaborative arrangements and non-collaborative arrangement transactions
Percentage of co promotion operating profits first fifty million	30.00%
Pre-tax profit share threshold			$ 50.0
After Second GAZYVA Threshold Date	35.00%
Until Second GAZYVA Threshold Date	37.50%
GAZYVA
Collaborative arrangements and non-collaborative arrangement transactions
Percentage of co promotion operating profits first fifty million	35.00%
Pre-tax profit share threshold	$ 50.0		$ 50.0
Limit of gross sale of GAZYVA to be achieved in preceding 12 months under option one	500.0
Limit of gross sale of GAZYVA to be achieved in any 12 months under option one	150.0
Sales trigger gross sales threshold	$ 350.0
After Second GAZYVA Threshold Date	35.00%			35.00%
Gross sales threshold in a consecutive 12-month period	$ 500.0
Until Second GAZYVA Threshold Date	37.50%	37.50%	37.50%
New Anti Cd20
Collaborative arrangements and non-collaborative arrangement transactions
Future percentage of co-promotion operating profits		37.50%	37.50%