XML 23 R85.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Income Taxes - Net Deferred Income Tax Liability (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Deferred income tax assets:    
Self-insurance accruals $ 94,690 $ 82,118
Net operating loss carryforwards 619,314 414,144
Accrued compensation and benefits 31,402 31,627
Federal benefit on state tax positions 9,115 11,027
Pension benefits 78,004 94,433
Deferred revenue 146,383 146,831
Other accruals 21,635 19,068
Deferred tax assets gross 1,000,543 799,248
Valuation allowance (17,577) (16,186)
Deferred tax assets net 982,966 783,062
Deferred income tax liabilities:    
Property and equipment basis differences (2,121,842) (1,937,009)
Other (5,386) (7,907)
Deferred tax liabilities, gross (2,127,228) (1,944,916)
Net deferred income tax liability (1,144,262) (1,161,854)
Deferred tax assets included in Sales-type lease and other assets $ 17,000 $ 18,000