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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Millions | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Total property, plant and equipment - net | $ 72,416 | $ 66,912
Customer receivables, net of allowances | 7 | 5
Other investments ($470 and $479 related to a VIE, respectively) | 2,959 | 2,482
Regulatory assets ($37 and $107 related to a VIE, respectively) | $ 2,469 | $ 1,894
Common stock, par value | $ 0.01 | $ 0.01
Common stock, authorized (in shares) | 800,000,000 | 800,000,000
Common stock, outstanding (in shares) | 471,000,000 | 468,000,000
Long-term debt | $ 31,463 | $ 27,818
Related to VIEs [Member] |  |
Total property, plant and equipment - net | 16,485 | 14,632
Other investments ($470 and $479 related to a VIE, respectively) | 470 | 479
Regulatory assets ($37 and $107 related to a VIE, respectively) | 37 | 107
Long-term debt | 5,941 | 5,080
FPL[Member] |  |
Customer receivables, net of allowances | 2 | 2
Regulatory assets ($37 and $107 related to a VIE, respectively) | $ 2,249 | $ 1,573
Common stock, authorized (in shares) | 1,000 | 1,000
Common stock, par value | $ 0 | $ 0
Common stock, issued (in shares) | 1,000 | 1,000
Common stock, outstanding (in shares) | 1,000 | 1,000
Long-term debt | $ 11,236 | $ 9,705
FPL[Member] | Related to VIEs [Member] |  |
Regulatory assets ($37 and $107 related to a VIE, respectively) | 37 | 107
Long-term debt | $ 74 | $ 144

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