Consolidated Balance Sheets - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents		$ 84,591	$ 81,855
Receivables, net		590,105	599,186
Inventories		253,727	289,410
Deferred income taxes		32,849	32,012
Prepayments and other current assets		35,189	83,763
Current assets held for sale		24,581	131,177
Total current assets		1,021,042	1,217,403
Investments		119,704	117,883
Property, plant and equipment (Note 1)		6,817,668	6,294,778
Less accumulated depreciation, depletion and amortization		2,506,571	2,386,113
Net property, plant and equipment		4,311,097	3,908,665
Deferred charges and other assets:
Goodwill (Note 3)	[1]	635,204	635,204
Other intangible assets, net (Note 3)		7,342	9,840
Other		366,485	322,943
Noncurrent assets held for sale		166,734	1,620,470
Total deferred charges and other assets		1,175,765	2,588,457
Total assets		6,627,608	7,832,408
Current liabilities:
Short-term borrowings (Note 7)		45,500	0
Long-term debt due within one year		243,789	268,552
Accounts payable		310,466	279,115
Taxes payable		45,775	39,955
Dividends payable		36,784	35,607
Accrued compensation		46,130	57,402
Other accrued liabilities		171,592	155,765
Current liabilities held for sale		47,603	154,728
Total current liabilities		947,639	991,124
Long-term debt (Note 7)		1,627,443	1,825,278
Deferred credits and other liabilities:
Deferred income taxes		720,319	714,022
Other liabilities		811,659	756,759
Noncurrent liabilities held for sale		0	295,441
Total deferred credits and other liabilities		1,531,978	1,766,222
Equity:
Preferred stocks (Note 9)		15,000	15,000
Common stockholders' equity:
Common stock (Note 10) Authorized - 500,000,000 shares, $1.00 par value Issued - 195,804,665 shares in 2015 and 194,754,812 shares in 2014		195,805	194,755
Other paid-in capital		1,230,119	1,207,188
Retained earnings		996,355	1,762,827
Accumulated other comprehensive loss		(37,148)	(42,103)
Treasury stock at cost - 538,921 shares		(3,626)	(3,626)
Total common stockholders' equity		2,381,505	3,119,041
Total stockholders' equity		2,396,505	3,134,041
Noncontrolling interest		124,043	115,743
Total equity		2,520,548	3,249,784
Total liabilities and equity		$ 6,627,608	$ 7,832,408

[1] Balance is presented net of accumulated impairment of $12.3 million at the pipeline and midstream segment, which occurred in prior periods.