Pensions and Postretirement Benefits Other than Pensions (Components of the Company's Pension-Related Costs) (Details) (Pension Cost [Member], USD $) In Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2011	Sep. 30, 2010	Sep. 30, 2011	Sep. 30, 2010
Service cost	$ 23.1	$ 14.1	$ 71.4	$ 65.4
Interest cost	46.3	48.3	141.8	145.6
Expected return on plan assets	(55.8)	(49.0)	(167.8)	(147.1)
Net amortization of prior service costs	1.5	2.2	4.3	6.2
Net amortization of plan net actuarial losses	12.0	13.5	39.4	41.5
Net periodic pension benefit cost	27.1	29.1	89.1	111.6
Net curtailment and settlement (gains) losses	1.6	(0.2)	7.4	6.0
Total	28.7	28.9	96.5	117.6
Segment, Continuing Operations [Member]
Total	28.1	27.5	95.5	112.6
Segment, Discontinued Operations [Member]
Total	$ 0.6	$ 1.4	$ 1.0	$ 5.0