Fair Value Measurements (Tables)

3 Months Ended

Mar. 31, 2015

Schedule Of Financial Assets And Liabilities Measured At Fair Value On A Recurring Basis

The following fair value hierarchy table categorizes information regarding our net financial assets measured at fair value on a recurring basis (in millions):



	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)			Significant Unobservable Inputs (Level 3)		Total
As of March 31, 2015
Supplemental executive retirement plan assets	$	43.8	$	—		$	—	$	43.8
Total financial assets	$	43.8	$	—		$	—	$	43.8
Derivatives, net	—		(45.4		)	—		(45.4		)
Total financial liabilities	$	—	$	(45.4	)	$	—	$	(45.4	)

As of December 31, 2014
Supplemental executive retirement plan assets	$	43.2	$	—		$	—	$	43.2
Total financial assets	$	43.2	$	—		$	—	$	43.2
Derivatives, net	—		(26.3		)	—		(26.3		)
Total financial liabilities	$	—	$	(26.3	)	$	—	$	(26.3	)

Schedule Of Carrying Values And Estimated Fair Values Of Debt Instruments

The carrying values and estimated fair values of our long-term debt instruments were as follows (in millions):



	March 31, 2015					December 31, 2014
	Carrying Value			Estimated Fair Value		Carrying Value		Estimated Fair Value
4.70% Senior notes due 2021	$	1,480.6		$	1,517.4	$	1,479.9	$	1,505.3
6.875% Senior notes due 2020	1,004.0			1,025.1		1,008.2		1,008.5
5.75% Senior notes due 2044	1,003.6			998.0		622.3		615.8
5.20% Senior notes due 2025	697.4		—	702.8		—		—
4.50% Senior notes due 2024	624.2			604.6		624.2		602.0
8.50% Senior notes due 2019	579.5			596.9		583.8		611.8
7.875% Senior notes due 2040	380.8			351.4		381.2		363.8
7.20% Debentures due 2027	149.2			160.7		149.2		171.4
3.25% Senior notes due 2016	145.4			149.1		998.0		1,018.3
4.33% MARAD notes, including current maturities, due 2016	39.1			39.2		46.6		46.8
4.65% MARAD bonds, including current maturities, due 2020	27.0			29.7		27.0		29.7
Total	$	6,130.8		$	6,174.9	$	5,920.4	$	5,973.4

- Definition

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

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