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CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Current Assets    
Cash and cash equivalents $ 3,905 $ 345
Funds deposited by counterparties 19 32
Restricted cash 6 8
Accounts receivable, net 904 1,025
Inventory 327 383
Derivative instruments 560 860
Cash collateral posted in support of energy risk management activities 50 190
Prepayments and other current assets 257 245
Total current assets 6,028 3,088
Property, plant and equipment, net 2,547 2,593
Other Assets    
Equity investments in affiliates 346 388
Operating lease right-of-use assets, net 301 464
Goodwill 579 579
Intangible assets, net 668 789
Nuclear decommissioning trust fund 890 794
Derivative instruments 261 310
Deferred income taxes 3,066 3,286
Other non-current assets 216 240
Total other assets 6,327 6,850
Total Assets 14,902 12,531
Current Liabilities    
Current portion of long-term debt and finance lease 1 88
Current portion of operating lease liabilities 69 73
Accounts payable  649 722
Derivative instruments 499 781
Cash collateral received in support of energy risk management activities 19 32
Accrued expenses and other current liabilities 678 663
Total current liabilities 1,915 2,359
Other Liabilities    
Long-term debt and finance lease 8,691 5,803
Non-current operating lease liabilities 278 483
Nuclear decommissioning reserve 303 298
Nuclear decommissioning trust liability 565 487
Derivative instruments 385 322
Deferred income taxes 19 17
Other non-current liabilities 1,066 1,084
Total other liabilities 11,307 8,494
Total Liabilities 13,222 10,853
Redeemable noncontrolling interest in subsidiaries 0 20
Commitments and Contingencies
Stockholders' Equity    
Common stock; $0.01 par value; 500,000,000 shares authorized; 423,057,848 and 421,890,790 shares issued; and 244,231,933 and 248,996,189 shares outstanding at December 31, 2020 and 2019 4 4
Additional paid-in capital 8,517 8,501
Accumulated deficit (1,403) (1,616)
Treasury stock, at cost; 178,825,915 and 172,894,601 shares at December 31, 2020 and 2019 (5,232) (5,039)
Accumulated other comprehensive loss (206) (192)
Total Stockholders' Equity 1,680 1,658
Total Liabilities and Stockholders' Equity $ 14,902 $ 12,531