CONSOLIDATED BALANCE SHEETS (USD $) In Millions	Sep. 30, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 1,426.1	$ 797.7
Short-term investments		3.1
Accounts receivable	268.6	238.9
Inventories - net	341.6	270.3
Other	21.6	31.4
Total current assets	2,057.9	1,341.4
Property, plant and equipment, net of accumulated depreciation, depletion and amortization of $2,364.5 and $2,152.5	3,739.3	3,942.3
Asset retirement obligation funds	95.0	95.0
Investments in and advances to affiliates	985.9	977.1
Investments in auction rate securities	71.1	102.8
Goodwill	2,064.5	2,064.5
Other assets	232.1	230.9
Total assets	9,245.8	8,754.0
Current liabilities:
Accounts payable and accrued expenses	440.4	323.2
Income taxes payable	77.7	62.2
Customer advances	878.2	431.5
Notes payable	4.7	4.9
Deferred income taxes	73.8	38.6
Distributions payable to noncontrolling interest		78.0
Other	27.7	10.2
Total current liabilities	1,502.5	948.6
Long-term debt	1,613.0	1,954.1
Deferred income taxes	1,029.4	1,074.7
Other noncurrent liabilities	351.1	343.2
Contingencies (Note 24)
Common stock - $0.01 par value, 500,000,000 shares authorized, 2011 - 71,885,052 shares issued and 2010 - 71,267,185 shares issued and outstanding	0.7	0.7
Paid-in capital	2,779.7	2,732.2
Retained earnings	2,428.2	1,370.8
Treasury stock - at cost, 2011 - 5,559,051 shares and 2010 - 0 shares	(878.4)
Accumulated other comprehensive loss	(67.4)	(53.3)
Total stockholders' equity	4,262.8	4,050.4
Noncontrolling interest	487.0	383.0
Total equity	4,749.8	4,433.4
Total liabilities and equity	$ 9,245.8	$ 8,754.0