Number of consolidated subsidiaries reported by the Company.

No definition available.

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- Definition

Amount for accounts payable to related parties.

+ References

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- Definition

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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Related Party Transactions (Management) (Narrative) (Details) - Management [Member] $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) subsidiary	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)
Equipment, Supplies and Services [Member]
Related Party Transaction [Line Items]
Payments, related party	$ 17.8	$ 15.2	$ 46.3	$ 31.6
Payables, related party	6.5		6.5		$ 17.3
Revenue, related party	0.6	$ 3.6	0.9	$ 6.3
Receivables, net, related party	$ 0.1		$ 0.1		$ 0.3
Acquisition of Non-Controlling Interest [Member]
Related Party Transaction [Line Items]
Number of subsidiaries \| subsidiary			1