Financial Instruments - Fair Values of Financial Instruments Not Approximating Carrying Values in Financial Statements (Detail) - USD ($) $ in Millions	Sep. 26, 2020	Dec. 28, 2019
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt and notes payable and current maturities of long-term debt	$ 1,449.7	$ 1,149.8
Carrying Value | Finance Receivables
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Finance and contract receivables, after allowance for credit loss	1,654.4	1,633.6
Carrying Value | Contract Receivables
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Finance and contract receivables, after allowance for credit loss	480.5	460.8
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt and notes payable and current maturities of long-term debt	1,619.4	1,238.8
Fair Value | Finance Receivables
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Finance and contract receivables, after allowance for credit loss	2,007.4	1,920.6
Fair Value | Contract Receivables
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Finance and contract receivables, after allowance for credit loss	$ 536.3	$ 505.5