Income Taxes, Provision and Effective tax rate impacts (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Income Taxes
Provision for income taxes	$ (218.7)	$ (110.7)
Effective tax rate	22.70%	16.70%
Discrete tax benefit comprised of the settlement of tax audits and lapses of statutes of limitation, along with a difference in a non-U.S. tax filing position		$ 18.6
Impact on the effective tax rate associated with the discrete tax benefit comprised of the settlement of tax audits and lapses of statutes of limitation, along with a difference in a non-U.S. tax filing position.		(2.80%)
Excess tax benefit from option exercises	$ 20.1	$ 29.7
Excess tax benefit, impact on effective tax rate	(2.10%)	(4.50%)
Impact of acquisition-related expenses on the effective tax rate	0.30%