Partnership Units and Related Matters - Summary of Distributions Declared or Paid by the Partnership (Details) - USD ($) $ in Millions |
3 Months Ended | |
---|---|---|
Mar. 31, 2017 |
Dec. 31, 2016 |
|
Distributions Declared [Member] | ||
Distributions declared or paid by the Partnership [Abstract] | ||
Distributions payable date | May 11, 2017 | |
Total Distributions | $ 209.6 | |
Distributions to Targa Resources Corp. | $ 206.8 | |
Distributions Paid [Member] | ||
Distributions declared or paid by the Partnership [Abstract] | ||
Distributions payable date | Feb. 10, 2017 | |
Total Distributions | $ 198.1 | |
Distributions to Targa Resources Corp. | $ 195.3 |