v3.20.2
Equity Textual (Details)
 3 Months Ended 9 Months Ended
Jan. 11, 2019
USD ($)
$ / shares
shares
Oct. 02, 2020
USD ($)
$ / shares
shares
Oct. 02, 2020
USD ($)
$ / shares
shares
Stock Repurchase Program, Authorized Amount   $ 100,000,000 $ 100,000,000
Gross proceeds $ 460,000,000   $ 460,000,000.0
Tangible Equity Units Issued, Number | shares 4,000,000    
Tangible Equity Units Issued, State Rate Of Return 5.75% 6.50% 6.50%
Fair value per unit | $ / shares $ 100    
Tangible Equity Units Issued, Number, Additional Issuable | shares 600,000    
Tangible Equity Units Issued, Cash Proceeds $ 447,700,000    
Prepaid Stock Purchase Contracts, Fair Value   $ 377,800,000 $ 377,800,000
Tangible Equity Units Issued, Fair Value   69,900,000 69,900,000
Tangible Equity Units Issued, Noncurrent   47,300,000 47,300,000
Tangible Equity Units Issued, Current   $ 22,600,000 $ 22,600,000
Tangible Equity Unit, Threshold Appreciation Price | $ / shares   $ 25.00 $ 25.00
Tangible Equity Unit, Reference Price | $ / shares   20.81 20.81
Tangible Equity Unit, Initial Principal Amount | $ / shares   15.6099 15.6099
Tangible Equity Unit, Quarterly Cash Distribution | $ / shares   $ 1.4375 $ 1.4375
Tangible Equity Unit, Quarterly Cash Distribution, Percentage   5.75% 5.75%
Tangible Equity Unit, Repayment   $ 6,600,000 $ 19,800,000
Stock Purchase Contracts Outstanding | shares   4,600,000 4,600,000
Minimum      
Shares Issued per Purchase Contract   4.0000 4.0000
Tangible Equity Units, Threshold For Conversion | shares   18,400,000 18,400,000
Maximum      
Shares Issued per Purchase Contract   4.8054 4.8054
Tangible Equity Units, Threshold For Conversion | shares   22,100,000 22,100,000