Condensed Consolidated Statements of Income (Unaudited) (USD $) In Millions, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Revenue:
Operating revenue	$ 488.2	$ 396.8	$ 893.2	$ 739.3
Costs and Expenses:
Costs of goods sold, services and rentals	424.8	318.7	789.7	611.8
Selling, general and administrative	37.9	36.9	75.6	75.6
Operating costs and expenses	462.7	355.6	865.3	687.4
Operating Income	25.5	41.2	27.9	51.9
Other Income and (Expense):
Gain on insurance settlement	0	0.7	0	0.7
Gain on sale of investment and other	2.5	0	6.2	0.7
Equity in income (losses) of real estate affiliates	(0.4)	(0.2)	1.6	(0.9)
Interest income	0.2	0.2	0.2	2.0
Interest expense	(6.1)	(6.5)	(12.3)	(13.0)
Income Before Taxes	21.7	35.4	23.6	41.4
Income tax expense	8.5	13.2	9.4	16.3
Income From Continuing Operations	13.2	22.2	14.2	25.1
Income From Discontinued Operations (net of income taxes)	5.5	6.7	9.7	21.1
Net Income	$ 18.7	$ 28.9	$ 23.9	$ 46.2
Basic Earnings Per Share:
Continuing operations (in dollars per share)	$ 0.32	$ 0.54	$ 0.34	$ 0.61
Discontinued operations (in dollars per share)	$ 0.13	$ 0.16	$ 0.23	$ 0.51
Net income (in dollars per share)	$ 0.45	$ 0.70	$ 0.57	$ 1.12
Diluted Earnings Per Share:
Continuing operations (in dollars per share)	$ 0.31	$ 0.54	$ 0.34	$ 0.61
Discontinued operations (in dollars per share)	$ 0.13	$ 0.16	$ 0.23	$ 0.51
Net income (in dollars per share)	$ 0.44	$ 0.70	$ 0.57	$ 1.12
Weighted Average Number of Shares Outstanding:
Basic (in shares)	41.7	41.2	41.6	41.1
Diluted (in shares)	42.2	41.4	42.0	41.4
Cash Dividends Paid Per Share (in dollars per share)	$ 0.315	$ 0.315	$ 0.63	$ 0.63