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Goodwill and Intangible Assets (Tables) | 9 Months Ended
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Sep. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible Assets [Table Text Block] | Balances of intangible assets, net, excluding goodwill as of September 30, 2017, are as follows:
| December 31, 2016 |  |  | Additions (a) |  | Amortization | September 30, 2017 |
Millions |  |  |  |  |  |
Intangible Assets |  |  |  |  |  |
Definite-Lived Intangible Assets |  |  |  |  |  |
Customer Relationships | $59.3 |  | — |  |  | $(3.4) |  | $55.9 |
Developed Technology and Other (b) | 6.3 |  |  | $0.9 |  |  | (0.7) | 6.5 |
Total Definite-Lived Intangible Assets | 65.6 |  |  | 0.9 |  |  | (4.1) | 62.4 |
Indefinite-Lived Intangible Assets |  |  |  |  |  |
Trademarks and Trade Names | 16.6 |  |  | — |  |  | n/a | 16.6 |
Total Intangible Assets |  | $82.2 |  |  |  | $0.9 |  |  | $(4.1) |  | $79.0 |
(a) | Additions resulting from the September 1, 2017, acquisition of Tonka Water. (See Note 3. Acquisitions.)
(b) | Developed Technology and Other includes patents, non-compete agreements, land easements and trade names.

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- Definition Tabular disclosure of goodwill and intangible assets, which may be broken down by segment or major class. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 + Details
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