Fair Value (Tables)

3 Months Ended

Mar. 31, 2016

Fair Value Disclosures [Abstract]

Recurring Fair Value Measures [Table Text Block]

	Fair Value as of March 31, 2016
Recurring Fair Value Measures	Level 1		Level 2		Level 3		Total
Millions
Assets
Investments (a)
Available-for-sale – Equity Securities		$7.0	—		—			$7.0
Available-for-sale – Corporate Debt Securities	—			$10.4	—		10.4
Cash Equivalents	2.5		—		—		2.5
Total Fair Value of Assets		$9.5		$10.4	—			$19.9
Liabilities (b)
Deferred Compensation	—			$14.9	—			$14.9
U.S. Water Services Contingent Consideration	—		—			$36.7	36.7
Total Fair Value of Liabilities	—			$14.9		$36.7		$51.6
Total Net Fair Value of Assets (Liabilities)		$9.5	$(4.5)		$(36.7)		$(31.7)

(a) Included in Other Investments on the Consolidated Balance Sheet.

(b) Included in Other Non-Current Liabilities on the Consolidated Balance Sheet.

NOTE 5. FAIR VALUE (Continued)

	Fair Value as of December 31, 2015
Recurring Fair Value Measures	Level 1		Level 2		Level 3		Total
Millions
Assets
Investments (a)
Available-for-sale – Equity Securities		$7.6	—		—			$7.6
Available-for-sale – Corporate Debt Securities	—			$10.9	—		10.9
Cash Equivalents	2.0		—		—		2.0
Total Fair Value of Assets		$9.6		$10.9	—			$20.5
Liabilities (b)
Deferred Compensation	—			$16.1	—			$16.1
U.S. Water Services Contingent Consideration	—		—			$36.6	36.6
Total Fair Value of Liabilities	—			$16.1		$36.6		$52.7
Total Net Fair Value of Assets (Liabilities)		$9.6	$(5.2)		$(36.6)		$(32.2)

(a) Included in Other Investments on the Consolidated Balance Sheet.

(b) Included in Other Non-Current Liabilities on the Consolidated Balance Sheet.

Financial Instruments [Table Text Block]

Financial Instruments	Carrying Amount	Fair Value
Millions
Long-Term Debt, Including Current Portion
March 31, 2016	$1,578.4	$1,708.0
December 31, 2015	$1,605.0	$1,676.0