Change In MTA Deployment Costs [Roll Forward]

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- Definition

MTA equipment deployment costs

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- Definition

MTA equipment development cost additions

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- Definition

Prepaid MTA Equipment Deployment Costs

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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The increase (decrease) during the reporting period in the amount of outstanding money paid in advance for goods or services that bring economic benefits for future periods.

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The cash outflow to acquire asset without physical form usually arising from contractual or other legal rights, excluding goodwill.

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Return of or reimbursements received in relation to direct costs and expenses previously paid or incurred.

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Commitment and Contingencies MTA Agreement Schedule (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Change In MTA Deployment Costs [Roll Forward]
Prepaid MTA equipment deployment costs, beginning of period			$ 79.5	$ 4.7	$ 4.7
Intangible assets, gross, beginning of period			1,625.0
MTA deployment costs, beginning of period			94.3	5.6	5.6
Amortization of intangible assets	$ 28.7	$ 25.8	81.0	73.3
MTA equipment development cost additions			101.1		91.2
Prepaid MTA equipment deployment costs, end of period	143.7		143.7		79.5
Intangible assets, gross, end of period	1,680.7		1,680.7		1,625.0
MTA deployment costs, end of period	174.2		174.2		94.3
MTA equipment deployment costs
Change In MTA Deployment Costs [Roll Forward]
Dployment costs incurred			83.3		76.5
Recoupment			(19.1)		(1.7)
Amortization of intangible assets			(2.1)		(0.8)
Franchise agreements
Change In MTA Deployment Costs [Roll Forward]
Intangible assets, gross, beginning of period			470.7
Intangible assets, gross, end of period	489.1		489.1		470.7
Franchise agreements \| MTA equipment deployment costs
Change In MTA Deployment Costs [Roll Forward]
Intangible assets, gross, beginning of period			14.8	$ 0.9	0.9
Intangible asset additions			17.8		14.7
Amortization of intangible assets			(2.1)		(0.8)
Intangible assets, gross, end of period	$ 30.5		$ 30.5		$ 14.8