Income Taxes, Provision and Effective tax rate (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Income Taxes
Provision for income taxes	$ (110.7)	$ (117.2)
Effective tax rate	16.70%	20.90%
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	$ 29.7	$ 17.1
Excess tax benefit, impact on effective tax rate	(4.50%)	(3.10%)