Investment in TiO2 Manufacturing Joint Venture - Summary of Balance Sheets of LPC (Detail) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
ASSETS
Current assets	$ 1,117.4	$ 1,242.2
Property and equipment, net	482.9	484.5
Total assets	1,838.0	1,934.4
LIABILITIES AND STOCKHOLDERS' EQUITY
Total liabilities and stockholders' equity	1,838.0	1,934.4
Louisiana pigment company, L.P
ASSETS
Current assets	118.5	122.2
Property and equipment, net	148.4	147.4
Total assets	266.9	269.6
LIABILITIES AND STOCKHOLDERS' EQUITY
Other liabilities, primarily current	42.1	41.2
Partners' equity	224.8	228.4
Total liabilities and stockholders' equity	$ 266.9	$ 269.6