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Equity Compensation Plans (Tables) | 3 Months Ended
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Mar. 31, 2012
Equity Compensation Plans |
Summary of equity compensation activity |
|  | PAA Units (1) |  |  | PNG Units (2)(3)(4) |
|  | Units |  | Weighted Average Grant Date Fair Value per Unit |  |  | Units |  | Weighted Average Grant Date Fair Value per Unit |
Outstanding, December 31, 2011 |  | 4.0 |  | $ | 43.53 |  |  | 0.8 |  | $ | 20.55 |
Granted |  | 0.7 |  | $ | 65.63 |  |  | 0.1 |  | $ | 15.05 |
Vested (5) |  | (0.8 | ) | $ | 37.85 |  |  | — |  | $ | — |
Outstanding, March 31, 2012 |  | 3.9 |  | $ | 48.65 |  |  | 0.9 |  | $ | 17.97 |
(1) Amounts do not include Class B units of Plains AAP, L.P. (2) Amounts do not include Class B units of PNGS GP LLC. (3) Amounts include PNG Transaction Grants. (4) Weighted average grant date fair value per unit for PNG Units outstanding at March 31, 2012, is impacted by the modification of PNG awards during the first quarter of 2012 as discussed above. (5) Approximately 0.2 million PAA units were issued, net of approximately 0.1 million units withheld for taxes, during the three months ended March 31, 2012. The remaining 0.5 million units that vested were settled in cash.
Summary of expense recognized and value of vesting related to outstanding equity compensation awards |
|  | Three Months Ended |
|  | March 31, |
|  | 2012 |  | 2011 |
Equity compensation expense |  | $ | 39 |  | $ | 20 |
LTIP unit-settled vestings |  | $ | 24 |  | $ | — |
LTIP cash-settled vestings |  | $ | 36 |  | $ | — |
DER cash payments |  | $ | 2 |  | $ | 1 |

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- Definition Disclosure that sets forth the allocation of equity compensation plan expenses to a given line item on the balance sheet and income statement for the period, the fair value of vesting (settled both in units and cash) related to the company's equity compensation plans, and the cash payments related to distribution equivalent rights. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested performance-based units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Topic 718 -SubTopic 10 -Publisher FASB -Number -Article -Subparagraph (c)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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