Slicers (applies to each fact value in each table cell)

Reporting Entity [Axis]

0001135185 (http://www.sec.gov/CIK)

Accrued Liabilities Tables [Abstract]	Period [Axis]
	2016-01-01 - 2016-12-31
Accrued Liabilities Tables [Abstract]
Accrued Liabilities	2016 2015 Customer maintenance reserves $ 81,830 $ 70,252 Salaries, wages and benefits 55,063 51,649 Maintenance 54,495 52,070 U.S. class action settlement 35,000 35,000 Aircraft fuel 16,149 12,983 Deferred revenue 10,298 12,702 Other 68,052 58,482 Accrued liabilities $ 320,887 $ 293,138