CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands		Dec. 31, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents		$ 284,060	$ 141,273
Restricted cash		1,150	0
Accounts and notes receivable
Customers, less allowance for doubtful accounts 2015 — $5,576; 2014 — $5,105		397,287	354,935
Other		20,737	18,907
Inventories		347,073	321,804
Current deferred income taxes	[1]	0	39,726
Prepaid expenses		34,284	28,640
Assets held for sale		0	15,184
Total current assets		1,084,591	920,469
Investments and long-term receivables		40,558	41,650
Property, plant & equipment, net		3,156,290	3,071,630
Goodwill		3,094,824	3,094,824
Other intangible assets, net		766,579	758,243
Other noncurrent assets		158,790	154,281
Total assets		8,301,632	8,041,097
Liabilities
Current maturities of long-term debt		130	150,137
Trade payables and accruals		175,729	145,148
Accrued salaries, wages and management incentives		91,440	84,722
Accrued interest		9,752	8,212
Other accrued liabilities		76,428	63,139
Liabilities of assets held for sale		0	520
Total current liabilities		353,479	451,878
Long-term debt		1,980,334	1,834,642
Noncurrent deferred income taxes		681,096	691,137
Deferred management incentive and other compensation		15,980	22,421
Pension benefits		233,661	252,531
Other postretirement benefits		42,318	76,372
Asset retirement obligations		226,594	226,565
Deferred revenue		207,660	213,968
Other noncurrent liabilities		106,322	94,884
Total liabilities		$ 3,847,444	$ 3,864,398
Other commitments and contingencies (Note 12)
Equity
Common stock, $1 par value — Authorized 480,000 shares, Outstanding 133,172 and 131,907 shares, respectively		$ 133,172	$ 131,907
Capital in excess of par value		2,822,578	2,734,661
Retained earnings		1,618,507	1,471,845
Accumulated other comprehensive loss		(120,069)	(161,714)
Total equity		4,454,188	4,176,699
Total liabilities and equity		$ 8,301,632	$ 8,041,097

[1] As discussed in Note 1, we early adopted ASU 2015-17 on a prospective basis as of December 31, 2015. Thus, all deferred income taxes as of December 31, 2015 are classified as noncurrent resulting in a $44,464 thousand decrease in current assets with a corresponding decrease in noncurrent liabilities.