CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 580.2	$ 709.2
Restricted cash	43.5	0.0
Accounts receivable, net of allowance for credit losses of $0.0 at March 31, 2021 and December 31, 2020	167.8	244.8
Inventories	241.4	261.6
Other current assets	239.2	204.7
Total current assets	1,272.1	1,420.3
Property, plant, equipment and mine development, net	3,025.4	3,051.1
Operating lease right-of-use assets	46.8	49.9
Investments and other assets	142.0	140.9
Deferred income taxes	0.0	4.9
Total assets	4,486.3	4,667.1
Current liabilities
Current portion of long-term debt	69.4	44.9
Accounts payable and accrued expenses	721.6	745.7
Total current liabilities	791.0	790.6
Long-term debt, less current portion	1,411.3	1,502.9
Deferred income taxes	34.6	35.0
Asset retirement obligations	658.6	650.5
Accrued postretirement benefit costs	410.8	413.2
Operating lease liabilities, less current portion	37.5	42.1
Other noncurrent liabilities	251.0	251.5
Total liabilities	3,594.8	3,685.8
Stockholders’ equity
Additional paid-in capital	3,366.4	3,364.6
Treasury stock, at cost — 42.9 and 42.7 common shares as of March 31, 2021 and December 31, 2020	(1,369.5)	(1,368.9)
Accumulated deficit	(1,353.4)	(1,273.3)
Accumulated other comprehensive income	194.6	205.8
Peabody Energy Corporation stockholders’ equity	839.5	929.6
Noncontrolling interests	52.0	51.7
Total stockholders’ equity	891.5	981.3
Total liabilities and stockholders’ equity	$ 4,486.3	$ 4,667.1
Treasury stock, shares (in shares)	42,900,000	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 March 31, 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 March 31, 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 March 31, 2021 and December 31, 2020	$ 1.4	$ 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)	141,200,000	140,500,000
Common stock, shares outstanding (in shares)	98,300,000	97,800,000