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, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Service cost	$ 16.7	$ 18.7	$ 53.2	$ 56.4
Interest cost	27.7	32.0	84.6	97.2
Expected return on plan assets	(36.0)	(39.6)	(108.2)	(118.8)
Net amortization of prior service costs	0.6	0.8	3.0	2.4
Net amortization of plan net actuarial losses	16.2	14.6	46.5	45.5
Net periodic pension benefit cost	25.2	26.5	79.1	82.7
Total	25.2	26.5	79.1	82.7
Segment, Continuing Operations [Member]
Total	22.8	24.1	71.7	75.0
Discontinued Operations [Member]
Total	$ 2.4	$ 2.4	$ 7.4	$ 7.7