Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2014

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 June 30, 2014
Supplemental executive retirement plan assets	$	42.4	$	—	$	—	$	42.4
Derivatives, net	—		17.0		—		17.0
Total financial assets	$	42.4	$	17.0	$	—	$	59.4

As of December 31, 2013
Supplemental executive retirement plan assets	$	37.7	$	—	$	—	$	37.7
Derivatives, net	—		1.8		—		1.8
Total financial assets	$	37.7	$	1.8	$	—	$	39.5

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):



	June 30, 2014				December 31, 2013
	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value
4.7% Senior notes due 2021	$	1,478.6	$	1,633.4	$	1,477.2	$	1,596.9
6.875% Senior notes due 2020	1,016.6		1,090.9		1,024.8		1,086.7
3.25% Senior notes due 2016	997.3		1,039.7		996.5		1,045.8
8.50% Senior notes due 2019	592.2		637.6		600.5		635.8
7.875% Senior notes due 2040	381.9		434.6		382.6		410.5
7.2% Debentures due 2027	149.1		188.9		149.1		178.6
4.33% MARAD bonds, including current maturities, due 2016	62.6		62.9		78.9		79.7
4.65% MARAD bonds, including current maturities, due 2020	29.3		32.5		31.5		35.2
6.36% MARAD bonds, including current maturities, due 2015	19.0		20.1		25.3		27.1
Total	$	4,726.6	$	5,140.6	$	4,766.4	$	5,096.3

- 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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