Long-Term Debt - Debt Redemption (Details) - 6.125% Notes	3 Months Ended
	Mar. 31, 2020
Period One
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	103.063%
Period Two
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	102.042%
Period Three
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	101.021%
Period Four
Debt Instrument, Redemption [Line Items]
Redemption percentage of principal amount	100.00%