XML 73 R61.htm IDEA: XBRL DOCUMENT v3.21.1
Fair Value (Details)
$ in Millions
Mar. 31, 2021
USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Senior notes $ 1,291.7
Estimate of Fair Value Measurement  
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]  
Senior notes $ 1,340.1