Interest Expense	12 Months Ended
	Dec. 31, 2019
Other Income and Expenses [Abstract]
Interest Expense	Interest ExpenseInterest expense is net of capitalized interest. Capitalized interest incurred during the construction phase of significant property and equipment additions totaled $2.5 million, $1.8 million, and $0.9 million in 2019, 2018, and 2017, respectively. We made interest payments of $71.2 million, $68.9 million, and $66.1 million in 2019, 2018 and 2017, respectively. Interest expense also includes amortization of debt issuance costs that are amortized using the effective interest method and amortization of original issue discounts.