to our operations due to a prolonged employee strike, terrorist attack, or other reasons, (5) changes to the regulatory environment (e.g., diminished slot restrictions or additional Open Skies agreements), (6) competitive changes by other airlines and (7) strategic changes to our operations leading to diminished utilization of the intangible assets.  

 

We assessed each of the above assumptions in our most recent impairment analyses. The combination of our most recently completed annual results and our projected revenues, expenses and cash flows more than offset any negative events and circumstances. The stabilizing operating environment for U.S. airlines has resulted in annual yields increasing along with load factors, leading to improved financial results.  

 

Goodwill . Our goodwill balance, which is related to the airline segment, was $9.8 billion at December 31, 2014 . We determined that there was no indication that Goodwill was impaired based upon our qualitative assessment of all relevant factors, including applicable factors noted in " Key Assumptions " above.  

 

Identifiable Intangible Assets. Our identifiable intangible assets, which are related to the airline segment, had a net carrying amount of $4.6 billion at December 31, 2014 , of which $4.4 billion related to indefinite-lived intangible assets. Indefinite-lived assets are not amortized and consist primarily of routes, slots, the Delta tradename and assets related to SkyTeam and collaborative arrangements. Definite-lived assets consist primarily of marketing and partner agreements.  

 

In 2014 , we performed a quantitative assessment of our Pacific routes and slots indefinite-lived intangible asset and determined that there was no indication that the asset was impaired. We obtained this asset as part of the acquisition of Northwest Airlines in 2008 and is composed of Pacific route authorities and takeoff and landing rights (“slots”) at Tokyo-Narita International Airport ("Narita"). This intangible asset supports Delta’s Narita hub activities and is essential to Delta's Pacific network. As of the 2014 assessment, the estimated fair value of the Pacific routes and slots intangible asset exceeded the $2.2 billion carrying value by approximately 20%. Changes in key inputs and assumptions, including (1) our strategy related to the composition of our Pacific network and flying, (2) new or enhanced joint ventures or alliances, (3) foreign currency exchange rates, (4) fuel costs and (5) Pacific region profitability, could impact the value of this asset in the future.  

 

We performed a qualitative assessment of all other indefinite-lived intangible assets and determined that there was no indication that our indefinitelived intangible assets were impaired. The qualitative assessments included analyses and weighting of all relevant factors, including the applicable factors noted above, which impact the fair value of our indefinite-lived intangible assets.  

 

Long-Lived Assets  

 

Our flight equipment and other long-lived assets have a recorded value of $21.9 billion at December 31, 2014 . This value is based on various factors, including the assets' estimated useful