Discontinued Operations and Special Charges (Gains) - Special Charges Liabilities (Details) - NATG – Non-lease components - Lease Liabilities and Other Exit Costs $ in Millions	6 Months Ended
Jun. 30, 2019 USD ($)
Restructuring Reserve [Roll Forward]
Beginning Balance	$ 2.8
Charged to expense	0.7
Paid or otherwise settled	(0.3)
Ending Balance	$ 3.2

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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Amount of decrease in the reserve for full or partial settlement through consideration other than cash.

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