Impairment of Long-Lived assets (Tables)

12 Months Ended

Dec. 31, 2016

Impairment or Disposal of Tangible Assets Disclosure [Abstract]

Schedule of Capital Leased Assets

As of December 31, 2016, all the long-term leases had been terminated and no residual and net investment value was outstanding. At December 31, 2015, the components of the net investment in the long-term leases consisted of estimated residual value of $639 million, unearned income of $287 million and a resulting net investment of $352 million.