SIGNIFICANT ACCOUNTING POLICIES - CAPITAL CONSTRUCTION FUND (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Accounts receivable, net	$ 197.9		$ 189.5
Cash Deposits Into CCF	0.0	$ 12.5
Qualified withdrawals from the CCF	0.0	$ 0.0
Eligible Accounts Receivable Assigned to CCF
Accounts receivable, net	174.8		174.7
Long-term Assets \| Cash
Capital Construction Fund - cash on deposit	$ 31.2		$ 31.2

The amount of accrued qualified withdrawals from the Capital Construction Fund that are reflected as receivables on the consolidated balance sheets.

No definition available.

+ Details

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- Definition

The amount on deposit in the Capital Construction Fund invested in a money market fund, reflected in the consolidated balance sheets.

+ References

No definition available.

+ Details

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- Definition

Amount of cash outflow associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

+ References

No definition available.

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- Definition

The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 3
-Subparagraph a
-Article 5

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