CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues:
Total revenues	$ 6,055.8	$ 3,415.9	$ 11,014.9	$ 7,048.7
Costs and expenses:
Product purchases and fuel	5,047.3	2,709.0	9,251.5	5,545.3
Operating expenses	215.8	184.8	399.3	355.8
Depreciation and amortization expense	269.9	211.9	479.0	428.0
General and administrative expense	71.0	63.7	138.0	125.1
Other operating (income) expense	(0.1)	0.7	(0.6)	4.6
Income (loss) from operations	451.9	245.8	747.7	589.9
Other income (expense):
Interest expense, net	(81.2)	(94.8)	(174.7)	(193.2)
Equity earnings (loss)	1.4	12.8	7.0	24.6
Gain (loss) from financing activities	(33.8)	(1.9)	(49.6)	(16.6)
Gain (loss) from sale of equity method investment	435.9		435.9
Other, net	0.5	0.1		0.2
Income (loss) before income taxes	774.7	162.0	966.3	404.9
Income tax (expense) benefit	(87.1)	(6.6)	(110.1)	(21.6)
Net income (loss)	687.6	155.4	856.2	383.3
Less: Net income (loss) attributable to noncontrolling interests	91.2	99.2	171.8	180.7
Net income (loss) attributable to Targa Resources Corp.	596.4	56.2	684.4	202.6
Premium on repurchase of noncontrolling interests, net of tax			53.1
Dividends on Series A Preferred Stock	8.2	21.8	30.0	43.7
Deemed dividends on Series A Preferred Stock	215.5		215.5
Net income (loss) attributable to common shareholders	$ 372.7	$ 34.4	$ 385.8	$ 158.9
Net income (loss) per common share - basic	$ 1.64	$ 0.15	$ 1.69	$ 0.70
Net income (loss) per common share - diluted	$ 1.61	$ 0.15	$ 1.66	$ 0.69
Weighted average shares outstanding - basic	227.8	228.6	228.1	228.5
Weighted average shares outstanding - diluted	231.7	231.3	232.0	230.9
Sales of Commodities [Member]
Revenues:
Total revenues	$ 5,624.2	$ 3,091.6	$ 10,190.3	$ 6,459.3
Fees from Midstream Services [Member]
Revenues:
Total revenues	$ 431.6	$ 324.3	$ 824.6	$ 589.4