Pensions and Postretirement Benefits Other Than Pensions (Schedule of Pretax Amounts Recognized in Accumulated Other Comprehensive Income (Loss) Other Than Pension) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011
Postretirement [Member]
Balance at December 31, 2010	$ (106.7)
Current year changes recorded to Accumulated other comprehensive income (loss)	(61.1)
Amortization reclassified to earnings	(1.9)
Settlements/curtailments reclassified to earnings	2.6
Currency translation and other	(0.1)
Balance at December 31, 2011	(167.2)
Postretirement [Member] | Net Actuarial Losses [Member]
Balance at December 31, 2010	(113.0)
Current year changes recorded to Accumulated other comprehensive income (loss)	(63.3)
Amortization reclassified to earnings	1.6
Settlements/curtailments reclassified to earnings	2.6
Currency translation and other	(0.1)
Balance at December 31, 2011	(172.2)
Postretirement [Member] | prior service gains [Member]
Balance at December 31, 2010	6.3
Current year changes recorded to Accumulated other comprehensive income (loss)	2.2
Amortization reclassified to earnings	(3.5)
Settlements/curtailments reclassified to earnings	0
Currency translation and other	0
Balance at December 31, 2011	5.0
Pension Plans [Member]
Balance at December 31, 2010	(1,159.2)
Current year changes recorded to Accumulated other comprehensive income (loss)	(220.6)
Amortization reclassified to earnings	56.7
Settlements/curtailments reclassified to earnings	93.3
Currency translation and other	(0.6)
Balance at December 31, 2011	(1,230.4)
Pension Plans [Member] | Net Actuarial Losses [Member]
Balance at December 31, 2010	(1,121.0)
Current year changes recorded to Accumulated other comprehensive income (loss)	(219.7)
Amortization reclassified to earnings	51.1
Settlements/curtailments reclassified to earnings	90.2
Currency translation and other	(0.6)
Balance at December 31, 2011	$ (1,200.0)