Related Party Transactions (Other Related Party Transactions) (Narrative) (Details) (Management [Member], Related Customer [Member], USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended
Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Employee Leasing Arrangements [Member]
Related Party Transaction [Line Items]
Charges to related party	$ 0.2	$ 0.2	$ 0.3	$ 0.3
Due from related party	0.1		0.1		0.1
Satellite Communication Services [Member]
Related Party Transaction [Line Items]
Revenue from related party	0.2	0.3	0.5	0.6
Accounts receivable, related party	$ 0.5		$ 0.5		$ 0.4

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

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For an unclassified balance sheet, amounts due from related parties other than affiliates, employees, joint ventures, officers or stockholders.

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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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