CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Current Assets:
Cash and cash equivalents	$ 539.1	$ 490.8
Accounts receivable, net	483.6	554.1
Short-term contract assets	41.6	38.5
Inventories, net	1,103.5	1,155.3
Prepaid expenses and other current assets	33.8	64.3
Total current assets	2,201.6	2,303.0
Property, plant and equipment, net	2,455.0	2,450.1
Goodwill	236.4	525.8
Other assets	276.4	355.7
Total assets	5,169.4	5,634.6
Current Liabilities:
Accounts payable	275.8	521.2
Short-term contract liabilities	109.8	78.7
Short-term debt and current portion of long-term debt	12.8	11.5
Other current liabilities	216.0	237.8
Total current liabilities	614.4	849.2
Long-term debt	1,516.9	1,387.4
Accrued postretirement benefits	303.9	312.5
Pension liabilities	685.0	731.5
Other long-term liabilities	206.9	160.8
Total liabilities	3,327.1	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-126,813,383 shares at June 30, 2020 and 126,695,171 shares at December 31, 2019; outstanding-126,813,078 shares at June 30, 2020 and 126,085,348 shares at December 31, 2019	12.7	12.7
Additional paid-in capital	1,617.8	1,618.0
Retained earnings	1,277.6	1,679.3
Treasury stock: 305 shares at June 30, 2020 and 609,823 shares at December 31, 2019	0.0	(18.2)
Accumulated other comprehensive loss, net of tax	(1,172.8)	(1,201.7)
Total ATI stockholders’ equity	1,735.3	2,090.1
Noncontrolling interests
Noncontrolling interests	107.0	103.1
Total Equity	1,842.3	2,193.2
Total Liabilities and Equity	$ 5,169.4	$ 5,634.6
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, authorized	50,000,000
Preferred stock, issued	0
Common stock, par value	$ 0.10	$ 0.10
Common stock, authorized	500,000,000	500,000,000