Financing Arrangements - Variable Interest Rates (Details) - Existing Term Loan Facility	3 Months Ended
	Mar. 31, 2019
Adjusted LIBOR (Eurodollar) Spread | Moody's, B1 Rating | Standard & Poor's, B Plus Rating or higher
Debt Instrument [Line Items]
Basis spread on variable rate	4.25%
Adjusted LIBOR (Eurodollar) Spread | Moody's, B2 Rating | Standard & Poor's, B Rating
Debt Instrument [Line Items]
Basis spread on variable rate	4.75%
Adjusted LIBOR (Eurodollar) Spread | Moody's, B3 Rating | Standard & Poor's, B Minus or lower Rating
Debt Instrument [Line Items]
Basis spread on variable rate	5.50%
Adjusted Base Rate (ABR) Spread | Moody's, B1 Rating | Standard & Poor's, B Plus Rating or higher
Debt Instrument [Line Items]
Basis spread on variable rate	3.25%
Adjusted Base Rate (ABR) Spread | Moody's, B2 Rating | Standard & Poor's, B Rating
Debt Instrument [Line Items]
Basis spread on variable rate	3.75%
Adjusted Base Rate (ABR) Spread | Moody's, B3 Rating | Standard & Poor's, B Minus or lower Rating
Debt Instrument [Line Items]
Basis spread on variable rate	4.50%