Carrying Amounts and Estimated Fair Values of Other Financial Instruments (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Short-term borrowings	$ 3.3	$ 252.8
Senior Notes	2,803.8	2,310.1
Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash equivalents	322.4	17.1
Short-term borrowings	3.3	252.8
Senior Notes	499.8	0.0
Business Acquisition Liabilities	34.0	34.0
Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Notes		0.0
Fair Value \| Fair Value, Inputs, Level 1
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Cash equivalents	322.4	17.1
Fair Value \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Short-term borrowings	3.3	252.8
Senior notes	512.3
Fair Value \| Fair Value, Inputs, Level 3
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Business Acquisition Liabilities	34.0	34.0
2.45% Senior notes due August 1, 2022 \| Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Notes	300.0	300.0
2.45% Senior notes due August 1, 2022 \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Term loan		302.9
Senior notes	300.0
2.875% Senior notes due October 1, 2022 \| Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Notes	400.0	399.9
2.875% Senior notes due October 1, 2022 \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	399.9	406.4
Term Loan Due December 22, 2024
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Term loan	400.0	400.0
Term Loan Due December 22, 2024 \| Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Term loan		400.0
Senior Notes	400.0
Term Loan Due December 22, 2024 \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	400.0	400.0
3.15% Senior notes due August 1, 2027 \| Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Notes	424.8	424.7
3.15% Senior notes due August 1, 2027 \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior notes	407.4	450.1
2.3% Senior notes due December 15, 2031 \| Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Notes	399.2	399.2
2.3% Senior notes due December 15, 2031 \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Notes		403.5
Senior notes	337.4
3.95% Senior notes due August 1, 2047 \| Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Notes	397.5	397.5
3.95% Senior notes due August 1, 2047 \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Senior Notes		471.6
Senior notes	351.0
5.00% Senior notes due June 15, 2052 [Member] \| Interest Rate Swap \| Carrying Amount
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest Rate Swap Lock Agreement liability	0.0	41.6
5.00% Senior notes due June 15, 2052 [Member] \| Interest Rate Swap \| Fair Value
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest Rate Swap Lock Agreement liability		$ 41.6
5.00% Senior notes due June 15, 2052 [Member] \| Interest Rate Swap \| Fair Value \| Fair Value, Inputs, Level 2
Fair Value Balance Sheet Grouping Financial Statement Captions [Line Items]
Interest Rate Swap Lock Agreement liability	$ 0.0

Amount of liability recognized arising from contingent consideration in a business combination.

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Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Face (par) amount of debt instrument at time of issuance.

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