Long-term Debt (Tables)

9 Months Ended

Sep. 30, 2021

Debt Disclosure [Abstract]

Schedule of Long-term Debt

(in millions)					Fair Value(1)
	September 30, 2021		December 31, 2020		September 30, 2021		December 31, 2020
2.20% Notes due 2032	$	550.0	$	—	$	533.7	$	—
2.75% Notes due 2030	750.0		750.0		772.1		804.8
3.75% Notes due 2027	600.0		600.0		660.7		679.3
3.50% Notes due 2024	400.0		400.0		427.7		438.3
0.55% Notes due 2023	300.0		—		299.9		—
3.75% Notes due 2022	350.0		350.0		359.7		366.9
Unamortized discount, debt issuance costs and other	(23.6)		(18.7)
Total long term-debt	2,926.4		2,081.3
Less: current portion of debt	2.4		1.1
Long term-debt, less current portion	$	2,924.0	$	2,080.2

(1)The fair value is estimated based on current yield rates plus the Company’s estimated credit spread available for financings with similar terms and maturities. Based on these inputs, the debt instruments are classified as Level 2 in the fair value hierarchy.