Income Taxes Deferred Income Tax Assets and Liabilities Recorded on Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Accrued employee benefits	$ 20,060	$ 18,374
Operating loss carryovers	1,157,841	1,295,925
Pensions	26,229	48,720
Tax credit carryovers	3,750	2,448
Other	122,333	212,882
Gross deferred tax assets	1,330,213	1,578,349
Valuation allowance	(1,087,505)	(1,276,305)	$ (1,326,204)	$ (1,148,268)
Deferred tax assets	242,708	302,044
Deferred tax liabilities:
Depreciation	(446,942)	(411,336)
Intangibles	(84,690)	(83,182)
Other	(145,412)	(142,008)
Deferred tax liabilities	(677,044)	(636,526)
Deferred Tax Liabilities, Net	(434,336)	(334,482)
Noncurrent deferred tax assets	46,434	18,797
Noncurrent deferred tax liabilities	(480,770)	(353,279)
Deferred Tax Liabilities, Net	$ 434,336	$ 334,482