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Fair Value Measurements - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 27, 2020
Mar. 29, 2019
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Current portion of long-term debt, carrying amount $ 250.0   $ 1,500.0
Current portion of long-term debt, fair value 250.0   1,500.0
Long-term debt, net of current maturities, carrying value 5,826.1   4,828.4
Long-term debt, net of current maturities, fair value 5,755.9   4,992.3
Impairment of goodwill 85.3 $ 0.0  
Telematics Reporting Unit      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Impairment of goodwill 85.3    
Fair Value, Measurements, Recurring      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Deferred compensation liabilities 27.3   29.6
Fair Value, Measurements, Recurring | Quoted Prices in Active Market (Level 1)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Deferred compensation liabilities 0.0   0.0
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Deferred compensation liabilities 27.3   29.6
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Deferred compensation liabilities $ 0.0   $ 0.0