Fair Value Measurements: (Tables)

3 Months Ended

Mar. 31, 2015

Fair value of cash equivalents and interest rate swaps

The fair values of interest rate swaps and long-term debt were determined using the following inputs at:



(Millions)	March 31, 2015		December 31, 2014
Recorded at Fair Value in the Financial Statements:
Cash equivalents - Level 1	$	50.1	$	—
Derivatives:
Interest rate swap assets - Level 2	$	—	$	0.4
Interest rate swap liabilities - Level 2	$	83.2	$	77.2

Not Recorded at Fair Value in the Financial Statements: (a)
Long-term debt, including current maturities - Level 2	$	8,835.9	$	8,777.5


(a)	Recognized at carrying value of $8,820.6 million and $8,651.7 million in long-term debt, including current maturities, in the accompanying consolidated balance sheets as of March 31, 2015 and December 31, 2014, respectively.

- Definition

Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances.

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