Accounts And Other Receivables (Allowance For Doubtful Accounts) (Details) (USD $) In Millions	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Balance at December 31, 2010	$ 23.2
Charges	5.4	5.3
Charge-offs, net of recoveries	0.5
Balance at June 30, 2011	28.1
Trade Accounts Receivable [Member]
Balance at December 31, 2010	22.0
Charges	4.8
Charge-offs, net of recoveries	0.8
Balance at June 30, 2011	26.0
Customer-Related And Other Notes [Member]
Balance at December 31, 2010	1.2
Charges	0.3
Charge-offs, net of recoveries	(0.3)
Balance at June 30, 2011	1.8
Notes Received As Partial Payment For Divestitures [Member]
Charges	0.3
Balance at June 30, 2011	$ 0.3