Fair Value Measurements (Tables)

6 Months Ended

Jun. 30, 2015

Our financial assets and liabilities that are measured at fair value on a recurring basis are as follows (in millions):



			Fair Value Measurements at Reporting Date Using
As of June 30, 2015	Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Valuation Technique ⁽¹⁾
Other current assets:
Common stock of SCA	$	7.4	$	7.4	$	—	$	—	M
Current portion of restricted marketable securities	19.4		—		19.4		—		M
Other long-term assets:
Restricted marketable securities	36.8		—		36.8		—		M
Redeemable noncontrolling interests	98.5		—		—		98.5		I
As of December 31, 2014
Other current assets:
Current portion of restricted marketable securities	$	4.6	$	—	$	4.6	$	—	M
Other long-term assets:
Option to purchase SCA stock	9.9		—		—		9.9		M
Restricted marketable securities	45.9		—		45.9		—		M
Redeemable noncontrolling interests	84.7		—		—		84.7		I

⁽¹⁾ The three valuation techniques are: market approach (M), cost approach (C), and income approach (I).

The carrying amounts and estimated fair values for all of our other financial instruments are presented in the following table (in millions):



	As of June 30, 2015				As of December 31, 2014
	Carrying Amount		Estimated Fair Value		Carrying Amount		Estimated Fair Value
Long-term debt:
Advances under revolving credit facility	$	153.0	$	153.0	$	325.0	$	325.0
Term loan facilities	195.0		195.0		450.0		450.0
8.125% Senior Notes due 2020	—		—		287.0		302.5
7.75% Senior Notes due 2022	227.1		236.2		227.1		240.7
5.125% Senior Notes due 2023	300.0		299.3		—		—
5.75% Senior Notes due 2024	863.7		871.3		456.2		471.4
2.00% Convertible Senior Subordinated Notes due 2043	262.4		410.6		258.0		358.4
Other notes payable	40.4		40.4		41.6		41.6
Financial commitments:
Letters of credit	—		33.0		—		31.8