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              [html]<thead><tr><td></td><td>Jalliumary J1 + EV10</td><td>Temperature</td></tr></thead><tbody><tr><td>Carrying value of long - term debt1</td><td>$ 3.131</td><td>$ 3.113</td></tr><tr><td>Fair value of long - term debt</td><td>3.693</td><td>3.511</td></tr></tbody>
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  We also measure certain non-financial assets at fair value on a nonrecurring basis, primarily goodwill and long-lived tangible and intangible 
  assets, in connection with periodic evaluations for potential impairment. See Note 1: Nature of Operations and Summary of Significant 
  Accounting Policies for additional information related to goodwill, intangible assets and long-lived assets. We recorded no material 
  impairment charges for these assets in 2014, 2013 and 2012. We estimate the fair value of goodwill and long-lived tangible and intangible 
  assets using primarily unobservable inputs and, as such, these are considered Level 3 fair value measurements. 