XML 45 R31.htm IDEA: XBRL DOCUMENT
v3.7.0.1

Stock-Based Compensation Plans | 3 Months Ended
--- | ---
Mar. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation Plans | Stock-Based Compensation Plans Stock Option Awards The following table presents a summary of our stock option award activity for the three months ended March 31, 2017:
| Number of Shares |  | Weighted Average Exercise Price
Outstanding at December 31, 2016 | 9,531,440 |  |  | $ | 28.93 |
Granted | 726,061 |  |  | 50.99 |
Exercised | (463,376 | ) |  | 22.45 |
Forfeited, canceled or expired | (45,795 | ) |  | 41.54 |
Outstanding at March 31, 2017 | 9,748,330 |  |  | 30.82 |
The grant date fair value of stock option awards granted during the three months ended March 31, 2017 was $14.24 per share. The fair value of stock options granted to our employees is estimated on the date of the grant using the Black Scholes option-pricing model, which employs various assumptions. Restricted Stock Awards The following table presents a summary of restricted stock award activity for the three months ended March 31, 2017:
| Shares of Restricted Stock (“RS”) |  | Restricted Stock Units (“RSU”)
| Number of Shares |  | Weighted Average Grant Date Fair Value |  | Number of Units |  | Weighted Average Grant Date Fair Value
Outstanding at December 31, 2016 | 1,250,343 |  |  | $ | 41.51 |  |  | 361,117 |  |  | $ | 28.26 |
Granted | 115,017 |  |  | 50.60 |  |  | 9,046 |  |  | 52.05 |
RS’s Vested/RSU’s Issued | (101,913 | ) |  | 40.99 |  |  | — |  |  | — |
Forfeited | (29,316 | ) |  | 41.16 |  |  | — |  |  | — |
Outstanding at March 31, 2017 | 1,234,131 |  |  | 42.40 |  |  | 370,163 |  |  | 28.84 |
Performance Unit Awards The following table presents a summary of the activity for performance unit awards to be settled in shares for the three months ended March 31, 2017:
| Number of Units |  | Weighted Average Grant Date Fair Value
Outstanding at December 31, 2016 | 6,255,178 |  |  | $ | 0.78 |
Granted | 2,584,750 |  |  | 0.92 |
Exercised | (1,854,728 | ) |  | 0.85 |
Canceled | — |  |  | — |
Outstanding at March 31, 2017 | 6,985,200 |  |  | 0.81 |
The performance unit awards granted during the three months ended March 31, 2017 have a grant date fair value of $0.92 per unit, as calculated using a Monte Carlo valuation model. MPLX Awards During the three months ended March 31, 2017, MPLX granted equity-based compensation awards under the MPLX LP 2012 Incentive Compensation Plan. The compensation expense for these awards is not material to our consolidated financial statements.

X
- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=65895303&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=68057994&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsShareBasedPaymentsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration