CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Millions	Sep. 30, 2018		Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 203.2		$ 137.2
Trade receivables, net of allowances of $0.1 and $0.1 million at September 30, 2018 and December 31, 2017	1,037.2		827.6
Inventories	177.9		204.5
Assets from risk management activities	59.6		37.9
Other current assets	82.8		62.7
Held for sale assets (see Note 4)	165.7		0.0
Total current assets	1,726.4		1,269.9
Property, plant and equipment	16,221.5		14,205.4
Accumulated depreciation	(4,140.6)		(3,775.4)
Property, plant and equipment, net	12,080.9		10,430.0
Intangible assets, net	2,029.6		2,165.8
Goodwill, net	256.6		256.6
Long-term assets from risk management activities	8.4		23.2
Investments in unconsolidated affiliates	441.5		221.6
Other long-term assets	25.7		21.5
Total assets	16,569.1	[1]	14,388.6
Current liabilities:
Accounts payable and accrued liabilities	2,088.4		1,186.9
Liabilities from risk management activities	176.3		79.7
Current debt obligations	290.0		350.0
Held for sale liabilities (see Note 4)	1.7		0.0
Total current liabilities	2,556.4		1,616.6
Long-term debt	5,678.9		4,703.0
Long-term liabilities from risk management activities	67.5		19.6
Deferred income taxes, net	487.5		479.0
Other long-term liabilities	270.6		597.9
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	6,270.5		6,302.8
Retained earnings (deficit)	(23.8)		(77.2)
Accumulated other comprehensive income (loss)	(125.9)		(29.9)
Treasury stock, at cost (665,724 shares as of September 30, 2018 and 585,640 shares as of December 31, 2017)	(39.6)		(35.6)
Total Targa Resources Corp. stockholders' equity	6,081.4		6,160.3
Noncontrolling interests in subsidiaries	1,188.8		595.7
Total owners' equity	7,270.2		6,756.0
Total liabilities, Series A Preferred Stock and owners' equity	16,569.1		14,388.6
Series A Preferred Stock [Member]
Current liabilities:
Series A Preferred 9.5% Stock, $1,000 per share liquidation preference, (1,200,000 shares authorized, issued and outstanding 965,100 shares), net of discount (see Note 11)	$ 238.0		$ 216.5

[1] Assets in the Corporate and Eliminations column primarily include tax-related assets, cash, prepaids and debt issuance costs for our revolving credit facilities.