Income Taxes, Provision and Effective tax rate impacts (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Taxes
Provision for income taxes	$ (385.8)	$ (166.1)	$ (851.8)	$ (412.0)
Effective tax rate	23.50%	21.40%	21.60%	19.60%
Excess tax benefit from option exercises	$ 57.1	$ 21.4	$ 162.6	$ 82.0
Excess tax benefit, impact on effective tax rate	(3.50%)	(2.80%)	(4.10%)	(3.90%)
Impact of acquisition-related expenses on the effective tax rate		0.20%	0.20%	0.40%
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.				(0.90%)