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CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) - USD ($) $ in Millions | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Total property, plant and equipment - net | $ 68,572 | $ 72,416
Customer receivables, allowances | 12 | 7
Regulatory assets, current | 399 | 336
Regulatory assets, noncurrent | 2,396 | 2,469
Other | 3,548 | 4,719
Long-term debt | 27,048 | 31,463
Current maturities of long-term debt | $ 2,649 | $ 1,676
Common stock, par value (in dollars per share) | $ 0.01 | $ 0.01
Common stock, shares authorized (in shares) | 800,000,000 | 800,000,000
Common stock, shares, outstanding (in shares) | 478,000,000 | 471,000,000
Related to VIEs [Member] |  |
Total property, plant and equipment - net | $ 9,686 | $ 16,485
Regulatory assets, current | 61 | 71
Regulatory assets, noncurrent | 0 | 37
Other | 0 | 470
Noncontrolling interest in variable interest entity | 3,080 | 1,006
Long-term debt | 1,020 | 5,941
Current maturities of long-term debt | 74 | 70
FPL [Member] |  |
Customer receivables, allowances | 5 | 2
Regulatory assets, current | 399 | 335
Regulatory assets, noncurrent | 2,168 | 2,249
Other | 855 | 690
Long-term debt | 11,595 | 11,236
Current maturities of long-term debt | $ 96 | $ 466
Common stock, no par value (in dollars per share) | $ 0 | $ 0
Common stock, shares authorized (in shares) | 1,000 | 1,000
Common stock, shares, outstanding (in shares) | 1,000 | 1,000
Common stock, shares, issued (in shares) | 1,000 | 1,000
FPL [Member] | Related to VIEs [Member] |  |
Regulatory assets, current | $ 61 | $ 71
Regulatory assets, noncurrent | 0 | 37
Long-term debt | 0 | 74
Current maturities of long-term debt | $ 74 | $ 70

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