Pensions - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Settlement (gain)/loss	$ 374	$ (819)	$ (693)
Accumulated benefit obligation	591,967	$ 636,497
Net actuarial losses	$ (13,700)
Expected return on plan assets, net of administrative expenses	2.69%	3.73%	3.68%
Savings plan expense	$ 7,700	$ 3,000	$ 10,800
Pension Plan | Qualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected future employer contribution, next fiscal year	25,000
Pension Plan | Nonqualified Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected future employer contribution, next fiscal year	$ 1,100
Hedge funds
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Plan assets, investment within plan asset category, percentage	3.00%	3.00%
Weighted Average
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets, net of administrative expenses	3.20%
Consolidated Pension Plan Of Dex Media
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets, net of administrative expenses	3.00%
Actual return on plan assets	2.40%	7.40%
YP Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Expected return on plan assets, net of administrative expenses	4.00%
Actual return on plan assets	5.10%	11.10%