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Acquisitions - WEST (Details) - USD ($) $ in Millions | 1 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Oct. 31, 2016 | Jun. 30, 2017 | Dec. 31, 2016
Assets Acquired [Abstract] |  |  |  |
Goodwill |  |  | $ 131.4 | $ 131.2
Water & Energy Systems Technology [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Percentage of Voting Interests Acquired |  | 100.00% |  |
Name of Acquired Entity |  | Water & Energy Systems Technology of Nevada, Inc. |  |
Total Consideration |  | $ 6.7 |  |
Cash Payment to Acquire Business |  | 5.9 |  |
Working Capital Adjustments |  |  | $ 0.2 |
Payment Due in April 2018 |  | 0.6 |  |
Assets Acquired [Abstract] |  |  |  |
Cash and Cash Equivalents |  | 0.1 |  |
Other Current Assets |  | 1.0 |  |
Customer Relationships | [1] | 2.8 |  |
Goodwill | [1],[2] | 4.2 |  |
Other Non-Current Assets |  | 0.1 |  |
Total Assets Acquired |  | 8.2 |  |
Liabilities Assumed [Abstract] |  |  |  |
Current Liabilities |  | 0.3 |  |
Non-Current Liabilities |  | 1.2 |  |
Total Liabilities Assumed |  | 1.5 |  |
Net Identifiable Assets Acquired |  | 6.7 |  |
Tax Deductible Goodwill |  | $ 0.0 |  |
[1] | Presented within Goodwill and Intangible Assets – Net on the Consolidated Balance Sheet. (See Note 4. Goodwill and Intangible Assets.)
[2] | For tax purposes, the purchase price allocation resulted in no allocation to goodwill.

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