SUPPLEMENTAL CASH FLOW INFORMATION - ADOPTION OF ACCOUNTING STANDARDS UPDATES (Details) $ in Millions	6 Months Ended
Jun. 30, 2018 USD ($) Provisions	Jun. 30, 2017 USD ($)
Adoption of accounting standards updates
Net cash used in investing activities	$ 996.8	$ 1,036.2
Accounting Standards Update 2016-18 \| Impact of ASU 2016-18
Adoption of accounting standards updates
Net cash used in investing activities		12.3
Accounting Standards Update 2016-15
Adoption of accounting standards updates
Number of provisions in ASU 2016-15 \| Provisions	8
Impact on financial statements from adoption	$ 0.0	$ 0.0

Amount of cash inflow (outflow) from investing activities, including discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 24
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3521-108585

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 26
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3574-108585

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