Debt (Tables)

3 Months Ended

Mar. 31, 2026

Debt [Abstract]

Long-Term Debt

Long-term debt:

	March 31, 2026		December 31, 2025
3.600% Senior Notes due 2026	$	—	$	1,400.0
€500 million 0.800% Senior Notes due 2027	575.5		588.7
4.650% Senior Notes (Exchange/IPG) due 2028	500.0		500.0
4.200% Senior Notes due 2029	400.0		—
2.450% Senior Notes due 2030	600.0		600.0
4.200% Senior Notes due 2030	600.0		600.0
4.750% Senior Notes (Exchange/IPG) due 2030	650.0		650.0
€500 million 1.400% Senior Notes due 2031	575.5		588.7
2.400% Senior Notes (Exchange/IPG) due 2031	500.0		500.0
2.600% Senior Notes due 2031	800.0		800.0
€600 million 3.700% Senior Notes due 2032	690.5		706.4
£325 million 2.250% Senior Notes due 2033	430.9		439.1
5.000% Senior Notes due 2033	700.0		—
5.375% Senior Notes (Exchange/IPG) due 2033	300.0		300.0
€600 million 3.850% Euro Notes due 2034	690.5		—
5.300% Senior Notes due 2034	600.0		600.0
5.300% Senior Note due 2036	600.0		—
3.375% Senior Notes (Exchange/IPG) due 2041	500.0		500.0
5.400% Senior Notes (Exchange/IPG) due 2048	500.0		500.0
Long-Term Debt, Gross	10,212.9		9,272.9
Unamortized discount	(192.7)		(192.3)
Unamortized debt issuance costs	(42.7)		(25.9)
Unamortized deferred loss from settlement of interest rate swap	—		(0.2)
Long-Term Debt, including current portion	9,977.5		9,054.5
Current portion	—		(1,399.5)
Long-Term Debt	$	9,977.5	$	7,655.0