Contractual interest rate for funds borrowed, under the debt agreement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Indebtedness - Summary of Indebtedness (Details) - USD ($) $ in Millions	Sep. 26, 2023	Dec. 31, 2023	Dec. 31, 2022	Feb. 28, 2021	Apr. 30, 2020
Non-current portion:
Non-current portion of notes payable and term loan		$ 6,788.2	$ 6,281.0
Interest rate on senior notes		3.625%
Senior Notes
Non-current portion:
Non-current portion of notes payable and term loan		$ 6,788.2	6,281.0
Line of Credit
Current portion:
Current portion of notes payable and term loan		150.0	0.0
2023 Term Loan \| Line of Credit
Current portion:
Current portion of notes payable and term loan		150.0	0.0
Non-current portion:
Non-current portion of notes payable and term loan		500.0	0.0
2023 Term Loan \| Line of Credit \| Reata Pharmaceuticals, Inc
Non-current portion:
Proceeds from long-term lines of credit	$ 1,000.0
2023 Term Loan \| Line of Credit \| Reata Pharmaceuticals, Inc \| 2023 Term Loan 364-day tranche
Non-current portion:
Proceeds from long-term lines of credit	500.0
2023 Term Loan \| Line of Credit \| Reata Pharmaceuticals, Inc \| 2023 Term loan three-year tranche
Non-current portion:
Proceeds from long-term lines of credit	$ 500.0
4.050% Senior Notes due September 15, 2025 \| Senior Notes
Non-current portion:
Non-current portion of notes payable and term loan		$ 1,746.6	1,744.7
Interest rate on senior notes		4.05%
2.250% Senior Notes due May 1, 2030 \| Senior Notes
Non-current portion:
Non-current portion of notes payable and term loan		$ 1,493.8	1,492.9
Interest rate on senior notes		2.25%			2.25%
5.200% Senior Notes due September 15, 2045 \| Senior Notes
Non-current portion:
Non-current portion of notes payable and term loan		$ 1,100.7	1,100.3
Interest rate on senior notes		5.20%		5.20%
3.150% Senior Notes due May 1, 2050 \| Senior Notes
Non-current portion:
Non-current portion of notes payable and term loan		$ 1,474.3	1,473.8
Interest rate on senior notes		3.15%			3.15%
3.250% Senior Notes due February 15, 2051 \| Senior Notes
Non-current portion:
Non-current portion of notes payable and term loan		$ 472.8	$ 469.3
Interest rate on senior notes		3.25%		3.25%