Long-Term Obligations and Notes Payable - Reliant Bank Revolver (Details) $ in Millions	3 Months Ended
	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Mar. 30, 2018 USD ($)	Mar. 30, 2018 CAD ($)
Line of Credit Facility [Line Items]
Long-term Debt	$ 1,761,100,000	$ 1,783,300,000
Line of credit | Revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 1,000,000,000.0	$ 50.0
Long-term Debt	300,000,000.0
Remaining borrowing capacity	$ 473,600,000
Line of credit | Reliant Bank Revolver | Revolving credit facility
Line of Credit Facility [Line Items]
Stated interest rate (as percent)	4.75%
Maximum borrowing capacity	$ 30,000,000.0
Commitment fee percentage (as percent)	0.50%
Long-term Debt	$ 30,000,000.0	$ 30,000,000.0
Remaining borrowing capacity	$ 0