Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014		Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 81,855		$ 45,225
Receivables, net	693,318		713,067
Inventories	300,811		282,391
Deferred income taxes	23,806		25,048
Commodity derivative instruments	18,335		1,447
Prepayments and other current assets	76,848		49,510
Total current assets	1,194,973		1,116,688
Investments	117,920		112,939
Property, plant and equipment (Note 1)	9,693,171		8,803,866
Less accumulated depreciation, depletion and amortization	4,166,407		3,872,487
Net property, plant and equipment	5,526,764		4,931,379
Deferred charges and other assets:
Goodwill (Note 5)	635,204	[1]	636,039	[1]
Other intangible assets, net (Note 5)	9,840		13,099
Other	325,277		251,188
Total deferred charges and other assets	970,321		900,326
Total assets	7,809,978		7,061,332
Current liabilities:
Short-term borrowings (Note 9)	0		11,500
Long-term debt due within one year	269,449		12,277
Accounts payable	382,671		404,961
Taxes payable	45,631		74,175
Dividends payable	35,607		33,737
Accrued compensation	62,775		69,661
Commodity derivative instruments	0		7,483
Other accrued liabilities	172,561		171,106
Total current liabilities	968,694		784,900
Long-term debt (Note 9)	1,825,278		1,842,286
Deferred credits and other liabilities:
Deferred income taxes	952,413		859,306
Other liabilities	813,809		718,938
Total deferred credits and other liabilities	1,766,222		1,578,244
Equity:
Preferred stocks (Note 11)	15,000		15,000
Common stockholders' equity:
Common stock (Note 12) Authorized - 500,000,000 shares, $1.00 par value Issued - 194,754,812 shares in 2014 and 189,868,780 shares in 2013	194,755		189,869
Other paid-in capital	1,207,188		1,056,996
Retained earnings	1,762,827		1,603,130
Accumulated other comprehensive loss	(42,103)		(38,205)
Treasury stock at cost - 538,921 shares	(3,626)		(3,626)
Total common stockholders' equity	3,119,041		2,808,164
Total stockholders' equity	3,134,041		2,823,164
Noncontrolling interest	115,743		32,738
Total equity	3,249,784		2,855,902
Total liabilities and equity	$ 7,809,978		$ 7,061,332

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