Consolidated Balance Sheets - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Assets
Cash and cash equivalents	$ 687.7	$ 645.9
Accounts receivable, net	470.0	345.8
Short-term contract assets	53.9	38.9
Inventories, net	1,046.3	997.1
Prepaid expenses and other current assets	48.8	38.3
Total Current Assets	2,306.7	2,066.0
Property, plant and equipment, net	1,528.5	1,469.2
Goodwill	227.9	240.7
Other assets	222.1	259.0
Total Assets	4,285.2	4,034.9
Liabilities and Stockholders’ Equity
Accounts payable	375.5	290.6
Short-term contract liabilities	116.2	111.8
Short-term debt and current portion of long-term debt	131.3	17.8
Other current liabilities	233.4	233.1
Total Current Liabilities	856.4	653.3
Long-term debt	1,711.6	1,550.0
Accrued postretirement benefits	258.1	326.7
Pension liabilities	415.4	673.6
Other long-term liabilities	211.0	189.9
Total Liabilities	3,452.5	3,393.5
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- 127,484,902 shares at December 31, 2021 and 126,820,440 shares at December 31, 2020; outstanding-127,253,045 shares at December 31, 2021 and 126,817,768 shares at December 31, 2020	12.7	12.7
Additional paid-in capital	1,596.7	1,625.5
Retained earnings	72.7	106.5
Treasury stock: 231,857 shares at December 31, 2021 and 2,672 shares at December 31, 2020	(4.8)	0.0
Accumulated other comprehensive loss, net of tax	(991.7)	(1,223.6)
Total ATI Stockholders’ Equity	685.6	521.1
Noncontrolling interests
Noncontrolling Interests	147.1	120.3
Total Stockholders' Equity	832.7	641.4
Total Liabilities and Stockholders' Equity	$ 4,285.2	$ 4,034.9