CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 341.5	$ 390.8
Restricted cash	1.2	1.5
Accounts and other receivables, net	330.4	309.4
Inventories, net	479.4	503.0
Prepaid expenses and other	10.9	15.0
Total current assets	1,163.4	1,219.7
Other assets:
Investment in TiO2 manufacturing joint venture	92.4	90.2
Marketable securities	1.8	3.3
Operating lease right-of-use assets	27.0	29.0
Deferred income taxes	125.6	127.7
Other	5.6	5.3
Total other assets	252.4	255.5
Property and equipment:
Land	39.1	40.4
Buildings	203.1	211.4
Equipment	1,076.9	1,113.1
Mining properties	98.5	116.2
Construction in progress	51.4	54.9
Gross property and equipment	1,469.0	1,536.0
Less accumulated depreciation and amortization	1,010.0	1,045.4
Net property and equipment	459.0	490.6
Total assets	1,874.8	1,965.8
Current liabilities:
Current maturities of long-term debt	1.4	1.5
Accounts payable and accrued liabilities	216.1	259.0
Income taxes	13.7	10.1
Total current liabilities	231.2	270.6
Noncurrent liabilities:
Long-term debt	436.3	444.0
Accrued pension costs	301.4	307.4
Payable to affiliate - income taxes	56.6	56.6
Operating lease liabilities	20.3	22.2
Deferred income taxes	19.0	20.7
Other	27.7	28.2
Total noncurrent liabilities	861.3	879.1
Stockholders' equity:
Common stock	1.2	1.2
Additional paid-in capital	1,396.2	1,396.2
Retained deficit	(126.3)	(132.5)
Accumulated other comprehensive loss	(487.8)	(448.8)
Treasury stock	(1.0)
Total stockholders' equity	782.3	816.1
Total liabilities and stockholders' equity	1,874.8	1,965.8
Commitments and contingencies (Notes 11 and 13)