CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Net income (loss)	$ 159.2	$ 51.7	$ (1,948.7)	$ 32.7
Other comprehensive income (loss):
Other comprehensive income (loss)	(193.1)	45.1	(94.1)	(15.0)
Comprehensive income (loss)	(33.9)	96.8	(2,042.8)	17.7
Less: Comprehensive income (loss) attributable to noncontrolling interests	93.3	56.3	8.0	67.7
Comprehensive income (loss) attributable to Targa Resources Partners LP	(127.2)	40.5	(2,050.8)	(50.0)
Commodity Contracts [Member]
Other comprehensive income (loss):
Change in fair value	(132.9)	88.4	26.2	49.6
Settlements reclassified to revenues	$ (60.2)	$ (43.3)	$ (120.3)	$ (64.6)