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Financial Instruments And Fair Value Measurements (Tables)
 9 Months Ended
Sep. 30, 2022
Fair Value Disclosures [Abstract]  
Gains (losses) recognized related to equity investments
Nine Months Ended September 30,
20222021
Net gains (losses) recognized during the period on equity securities$(0.1)$10.9 
Less: Net gains recognized during the period on equity securities sold during the period— 7.5 
Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date$(0.1)$3.4 
Summary Of Carrying Values And Fair Values Of Fixed Rate Debt A summary of the aggregate carrying values and fair values of our fixed rate long-term debt is as follows:
September 30,
2022		December 31,
2021
Carrying value$3,544.6 $2,858.4 
Fair value$3,095.6 $3,017.8 
Assets Measured and Recorded At Fair Value On A Nonrecurring Basis
The following table presents assets measured and recorded at fair value on a nonrecurring basis during the nine months ended September 30, 2022 and 2021:
20222021
DescriptionFair Value
Measurements Using Significant
Unobservable Inputs
(Level 3)		Gain/(Loss)Fair Value
Measurements Using Significant
Unobservable Inputs
(Level 3)		Gain/(Loss)
Equity investment$— $— $53.4 $3.4 
Right-of-use assets$— $— $— $(0.1)
Long-lived assets held and used$— $(1.0)$10.4 $(3.1)