CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions		Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents		$ 124.9	$ 232.1
Trade receivables, net of allowances of $0.2 and $0.1 million at March 31, 2019 and December 31, 2018		752.8	865.5
Inventories		197.9	164.7
Assets from risk management activities		75.9	115.3
Other current assets		29.5	41.3
Total current assets		1,181.0	1,418.9
Property, plant and equipment		18,189.3	17,220.7
Accumulated depreciation and amortization		(4,485.9)	(4,292.3)
Property, plant and equipment, net		13,703.4	12,928.4
Intangible assets, net		1,940.2	1,983.2
Goodwill, net		46.6	46.6
Long-term assets from risk management activities		23.1	34.1
Investments in unconsolidated affiliates		605.9	490.5
Other long-term assets		69.0	36.5
Total assets		17,569.2	16,938.2
Current liabilities:
Accounts payable and accrued liabilities		1,680.2	1,737.3
Liabilities from risk management activities		43.3	33.6
Current debt obligations	[1]	318.1	1,027.9
Total current liabilities		2,041.6	2,798.8
Long-term debt		7,118.5	5,632.4
Long-term liabilities from risk management activities		9.4	3.1
Deferred income taxes, net		507.6	525.2
Other long-term liabilities		301.2	262.2
Contingencies (see Note 18)		0.0	0.0
Targa Resources Corp. stockholders' equity:
Common stock value		0.2	0.2
Preferred stock ($0.001 par value, after designation of Series A Preferred Stock: 98,800,000 shares authorized, no shares issued and outstanding)		0.0	0.0
Additional paid-in capital		5,925.7	6,154.9
Retained earnings (deficit)		(169.3)	(130.4)
Accumulated other comprehensive income (loss)		48.9	94.3
Treasury stock, at cost (895,410 shares as of March 31, 2019 and 665,753 shares as of December 31, 2018)		(49.2)	(39.6)
Total Targa Resources Corp. stockholders' equity		5,756.3	6,079.4
Noncontrolling interests		1,581.0	1,391.4
Total owners' equity		7,337.3	7,470.8
Total liabilities, Series A Preferred Stock and owners' equity		17,569.2	16,938.2
Series A Preferred Stock [Member]
Current liabilities:
Series A Preferred 9.5% Stock, $1,000 per share liquidation preference, (1,200,000 shares authorized, 965,100 shares issued and outstanding), net of discount (see Note 12)		$ 253.6	$ 245.7

[1] While we consolidate the debt of the Partnership in our financial statements, we do not have the obligation to make interest payments or debt payments with respect to the debt of the Partnership.