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v3.20.4

Consolidated Balance Sheets - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Current assets |  |
Cash and cash equivalents | $ 163.6 | $ 280.3
Accounts receivable—trade, less allowance for doubtful accounts of $0.1 in 2020 and $1.2 in 2019 | 168.8 | 172.9
Inventories, at lower of cost or market | 279.1 | 227.6
Prepaid expenses and other current assets | 13.7 | 30.0
Total current assets | 625.2 | 710.8
Property, plant and equipment, at cost less accumulated depreciation and amortization of $1,191.4 in 2020 and $1,079.2 in 2019 | 1,867.6 | 1,807.3
Other assets | 192.9 | 169.1
Total assets | 2,685.7 | 2,687.2
Current liabilities |  |
Current maturities of long-term debt | 51.2 | 38.8
Trade accounts payable and accrued liabilities | 471.1 | 466.2
Income taxes payable | 8.8 | 0.0
Total current liabilities | 531.1 | 505.0
Long-term debt, including capitalized lease obligations | 951.2 | 999.3
Deferred income taxes | 218.4 | 216.7
Asset retirement obligations | 35.1 | 32.8
Deferred credits and other liabilities | 165.8 | 130.4
Total liabilities | 1,901.6 | 1,884.2
Stockholders' Equity |  |
Preferred Stock, par $0.01 (authorized 20,000,000 shares, none outstanding) | 0.0 | 0.0
Common Stock, par $0.01, (authorized 200,000,000 shares, 46,767,164 shares issued at December 2020 and 2019, respectively) | 0.5 | 0.5
Treasury stock (19,518,551 and 16,307,048 shares held at December 31, 2020 and 2019, respectively) | (1,490.9) | (1,099.8)
Additional paid in capital (APIC) | 533.3 | 538.7
Retained earnings | 1,743.1 | 1,362.9
Accumulated other comprehensive income (AOCI) | (1.9) | 0.7
Total stockholders' equity | 784.1 | 803.0
Total liabilities and stockholders' equity | $ 2,685.7 | $ 2,687.2

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