CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 548.3	$ 709.2
Restricted cash	13.6	0.0
Accounts receivable, net of allowance for credit losses of $0.0 at June 30, 2021 and December 31, 2020	250.7	244.8
Inventories	232.5	261.6
Other current assets	225.4	204.7
Total current assets	1,270.5	1,420.3
Property, plant, equipment and mine development, net	3,008.3	3,051.1
Operating lease right-of-use assets	42.4	49.9
Investments and other assets	132.2	140.9
Deferred income taxes	0.0	4.9
Total assets	4,453.4	4,667.1
Current liabilities
Current portion of long-term debt	94.0	44.9
Accounts payable and accrued expenses	711.0	745.7
Total current liabilities	805.0	790.6
Long-term debt, less current portion	1,324.1	1,502.9
Deferred income taxes	34.2	35.0
Asset retirement obligations	664.5	650.5
Accrued postretirement benefit costs	405.9	413.2
Operating lease liabilities, less current portion	34.8	42.1
Other noncurrent liabilities	233.1	251.5
Total liabilities	3,501.6	3,685.8
Stockholders’ equity
Additional paid-in capital	3,463.8	3,364.6
Treasury stock, at cost — 43.0 and 42.7 common shares as of June 30, 2021 and December 31, 2020	(1,370.2)	(1,368.9)
Accumulated deficit	(1,382.0)	(1,273.3)
Accumulated other comprehensive income	183.4	205.8
Peabody Energy Corporation stockholders’ equity	896.5	929.6
Noncontrolling interests	55.3	51.7
Total stockholders’ equity	951.8	981.3
Total liabilities and stockholders’ equity	$ 4,453.4	$ 4,667.1
Treasury stock, shares (in shares)	43,000,000.0	42,700,000
Preferred Stock
Stockholders’ equity
Preferred Stock — $0.01 per share par value; 100.0 shares authorized, no shares issued or outstanding as of June 30, 2021 and December 31, 2020	$ 0.0	$ 0.0
Preferred stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	100,000,000.0	100,000,000.0
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Series Common Stock
Stockholders’ equity
Series Common Stock — $0.01 per share par value; 50.0 shares authorized, no shares issued or outstanding as of June 30, 2021 and December 31, 2020	$ 0.0	$ 0.0
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	50,000,000.0	50,000,000.0
Common stock, shares issued (in shares)	0	0
Common stock, shares outstanding (in shares)	0	0
Common Stock
Stockholders’ equity
Series Common Stock — $0.01 per share par value; 50.0 shares authorized, no shares issued or outstanding as of June 30, 2021 and December 31, 2020	$ 1.5	$ 1.4
Common stock, par value per share (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	450,000,000.0	450,000,000.0
Common stock, shares issued (in shares)	154,100,000	140,500,000
Common stock, shares outstanding (in shares)	111,100,000	97,800,000