Restructuring, Impairment and Other Charges - Narrative (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Restructuring Cost And Reserve [Line Items]
Employee termination costs	$ 8.4	$ 32.8	$ 22.2
Other restructuring charges	21.9	33.8	16.6
Multi-employer pension plan charges	10.7	40.0	2.9
Gain on sale of previously impaired assets	9.7	11.8	$ 5.7
MEPP withdrawal obligations
Restructuring Cost And Reserve [Line Items]
Multi-employer pension plan charges	10.7
LSC Communications, Inc.
Restructuring Cost And Reserve [Line Items]
Multi-employer pension plan, present value of estimated future payments		$ 37.1
LSC Communications, Inc. | MEPP withdrawal obligations
Restructuring Cost And Reserve [Line Items]
Multi-employer pension plan charges	$ 7.1