XML 61 R43.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Unit-Based Compensation (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2018
Share-based Compensation [Abstract] |
Schedule of Nonvested Share Activity | A summary of our phantom unit award activity is as follows:
| Number of Phantom Common Units |  | Weighted-Average Grant Date Fair Value
Outstanding at December 31, 2016 | 2,013,634 |  |  | $ | 34.43 |
Granted | 203,867 |  |  | 28.31 |
Vested | (289,377 | ) |  | 45.48 |
Forfeited | (150,823 | ) |  | 34.71 |
Outstanding at December 31, 2017 | 1,777,301 |  |  | 31.89 |
Granted | 420,300 |  |  | 28.86 |
Vested | (169,996 | ) |  | 28.18 |
Forfeited | (214,344 | ) |  | 31.93 |
Outstanding at March 31, 2018 | 1,813,261 |  |  | $ | 30.96 |

X
- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
Name: | us-gaap_ScheduleOfNonvestedShareActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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