v3.10.0.1

Partners' Capital and Distributions (Tables) | 12 Months Ended
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Dec. 31, 2018
Partners' Capital Notes [Abstract] |
Changes In Outstanding Limited Partner Units | The following table details the changes in the number of our limited partner units outstanding from January 1, 2016 through December 31, 2018:
Limited partner units outstanding on January 1, 2016 | 227,427,247
February 2016—Settlement of employee LTIP awards | 350,552
During 2016—Other(a) | 6,117
Limited partner units outstanding on December 31, 2016 | 227,783,916
January 2017—Settlement of employee LTIP awards | 216,679
During 2017—Other(a) | 23,961
Limited partner units outstanding on December 31, 2017 | 228,024,556
January 2018—Settlement of employee LTIP awards | 168,913
During 2018—Other(a) | 1,691
Limited partner units outstanding on December 31, 2018 | 228,195,160
(a) | Limited partner units issued to settle the equity-based retainer paid to independent directors of our general partner.
Distributions Made to Limited Partner, by Distribution | Distributions we paid during 2016, 2017 and 2018 were as follows (in thousands, except per unit amount):
Payment Date |  | Per Unit Cash Distribution Amount |  | Total Cash Distribution
2/12/2016 |  | $ | 0.7850 |  |  | $ | 178,808 |
5/13/2016 |  | 0.8025 |  |  | 182,797 |
8/12/2016 |  | 0.8200 |  |  | 186,783 |
11/14/2016 |  | 0.8375 |  |  | 190,769 |
Total |  | $ | 3.2450 |  |  | $ | 739,157 |
2/14/2017 |  | $ | 0.8550 |  |  | $ | 194,961 |
5/15/2017 |  | 0.8725 |  |  | 198,951 |
8/14/2017 |  | 0.8900 |  |  | 202,942 |
11/14/2017 |  | 0.9050 |  |  | 206,362 |
Total |  | $ | 3.5225 |  |  | $ | 803,216 |
2/14/2018 |  | $ | 0.9200 |  |  | $ | 209,940 |
5/15/2018 |  | 0.9375 |  |  | 213,933 |
8/14/2018 |  | 0.9575 |  |  | 218,497 |
11/14/2018 |  | 0.9775 |  |  | 223,061 |
Total |  | $ | 3.7925 |  |  | $ | 865,431 |

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