Acquisitions - Tonka Water (Details) - Tonka Water [Member] $ in Millions	Sep. 01, 2017 USD ($)
Business Acquisition [Line Items]
Percentage of Voting Interests Acquired	100.00%
Name of Acquired Entity	Tonka Water
Total Consideration	$ 19.2
Payments to Acquire Business	19.0
Assets Acquired [Abstract]
Accounts Receivable	5.1
Other Current Assets	5.1
Trade Names	0.9
Goodwill	16.9
Other Non-Current Assets	0.2
Total Assets Acquired	28.2
Liabilities Assumed [Abstract]
Current Liabilities	9.0
Total Liabilities Assumed	9.0
Net Identifiable Assets Acquired	19.2
Tax Deductible Goodwill	4.1
Working Capital Adjustment Paid in the Fourth Quarter 2017	$ 0.2