Principles of Consolidation and Basis of Presentation Accounting Changes and Error Corrections (Details) - Understatement [Member] - Restatement Adjustment [Member] $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Principal payments on revolving line-of-credit, long-term debt and finance lease obligations [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Quantifying Misstatement in Current Year Financial Statements, Amount	$ (33.0)
Proceeds from revolving line-of-credit and long-term debt [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Quantifying Misstatement in Current Year Financial Statements, Amount	$ 33.0