Property and Equipment - Other Property Plant and Equipment Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Other property and equipment depreciation expense:
Depreciation expense	$ 238,554	$ 237,996	$ 190,941
Other property and equipment, net
Other property and equipment depreciation expense:
Depreciation expense	327,540	329,862	291,582
Buildings and improvements
Other property and equipment depreciation expense:
Depreciation expense	6,036	5,394	5,791
Furniture, fixtures, equipment and other
Other property and equipment depreciation expense:
Depreciation expense	90,895	94,389	90,885
Customer premises equipment
Other property and equipment depreciation expense:
Depreciation expense	$ 230,609	$ 230,079	$ 194,906