Income Taxes, Provision and Effective tax rate (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Income Taxes
Provision for income taxes	$ (166.1)	$ (115.2)	$ (412.0)	$ (363.0)
Effective tax rate	21.40%	18.20%	19.60%	20.30%
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%)
Excess tax benefit from option exercises	$ 21.4	$ 38.3	$ 82.0	$ 67.3
Excess tax benefit, impact on effective tax rate	(2.80%)	(6.00%)	(3.90%)	(3.80%)
Impact of gain associated with the bargain purchase acquisition on the effective tax rate				(0.10%)
Impact of acquisition-related expenses on the effective tax rate	0.20%	0.20%	0.40%	0.10%