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AeroTurbine Restructuring (Narrative) (Details) - AeroTurbine, Inc. [Member] $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) ft² | Dec. 31, 2015 USD ($) | Mar. 20, 2017 ft²
Restructuring Cost and Reserve [Line Items] |  |  |
Expense related to a lower of cost or market adjustment of parts inventory | $ 36.0 | $ 38.7 |
Square footage of leased premises | ft² | 264,000 |  |
Other operating (loss) income | $ (33.9) | 14.0 |
Pretax loss | $ 123.3 | $ 74.0 |
Subsequent Event [Member] |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Square footage of leased premises | ft² |  |  | 64,000

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