Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 645.9	$ 490.8
Accounts receivable, net	345.8	554.1
Short-term contract assets	38.9	38.5
Inventories, net	997.1	1,155.3
Prepaid expenses and other current assets	38.3	64.3
Total Current Assets	2,066.0	2,303.0
Property, plant and equipment, net	1,469.2	2,450.1
Goodwill	240.7	525.8
Other assets	259.0	355.7
Total Assets	4,034.9	5,634.6
Liabilities and Stockholders’ Equity
Accounts payable	290.6	521.2
Short-term contract liabilities	111.8	78.7
Short-term debt and current portion of long-term debt	17.8	11.5
Other current liabilities	233.1	237.8
Total Current Liabilities	653.3	849.2
Long-term debt	1,550.0	1,387.4
Accrued postretirement benefits	326.7	312.5
Pension liabilities	673.6	731.5
Other long-term liabilities	189.9	160.8
Total Liabilities	3,393.5	3,441.4
ATI Stockholders’ Equity:
Preferred stock, par value $0.10: authorized-50,000,000 shares; issued-none	0.0	0.0
Common stock, par value $0.10: authorized-500,000,000 shares; issued- 126,820,440 shares at December 31, 2020 and 126,695,171 shares at December 31, 2019; outstanding-126,817,768 shares at December 31, 2020 and 126,085,348 shares at December 31, 2019	12.7	12.7
Additional paid-in capital	1,625.5	1,618.0
Retained earnings	106.5	1,679.3
Treasury stock: 2,672 shares at December 31, 2020 and 609,823 shares at December 31, 2019	0.0	(18.2)
Accumulated other comprehensive loss, net of tax	(1,223.6)	(1,201.7)
Total ATI Stockholders’ Equity	521.1	2,090.1
Noncontrolling interests
Noncontrolling Interests	120.3	103.1
Total Stockholders' Equity	641.4	2,193.2
Total Liabilities and Stockholders' Equity	$ 4,034.9	$ 5,634.6