Long-Term Debt and Credit Facilities - Debt Refinancing (Details) - USD ($) $ in Millions	Jul. 12, 2017	Dec. 31, 2017
Debt instruments
Debt issuance costs		$ 40.9
SourceHOV
Debt instruments
Repayments of Long-term Lines of Credit	$ 1,050.7
Novitex
Debt instruments
Payments to acquire businesses, Net of cash acquired	420.5
Original SourceHOV Term Loans
Debt instruments
Debt issuance costs	3.3
Write off of unamortized issuance costs and discount costs	30.5
Debt discount	3.5
Prepayment penalty on extinguishment of original term loan	5.0
Senior secured term loan
Debt instruments
Debt issuance costs	28.9
Third party debt issuance costs	2.8
Expensed debt issuance costs	1.1
Capitalized debt issuance costs	$ 27.8

Amount of noncash expense included in interest expense to amortize debt discount and premium associated with the related debt instruments. Excludes amortization of financing costs. Alternate captions include noncash interest expense.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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The amount of third party debt issuance costs.

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