Employee Benefit Plans (Details 4) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Employee benefit plans
Discretionary contribution	$ 250.0
Direct benefit, net of federal subsidies paid to unfunded plan	3.7
Domestic Pension Plans
Estimated minimum benefit payments, net of subsidies:
2014	35.9
2015	81.4
2016	21.0
2017	23.4
2018	25.1
Subsequent five years	170.7
Qualified pension plans
Employee benefit plans
Employer contributions	277.9
Expected minimum required funding contributions in 2014	0.1
Non-qualified pension plans
Employee benefit plans
Employer contributions	6.3
Expected minimum required funding contributions in 2014	9.1
Foreign Pension Plans
Employee benefit plans
Employer contributions	16.6
Expected minimum required funding contributions in 2014	11.2
Expected direct benefit payments in next fiscal year	2.8
Plan assets	0
Estimated minimum benefit payments, net of subsidies:
2014	14.2
2015	15.3
2016	16.2
2017	17.1
2018	17.3
Subsequent five years	92.9
Foreign Pension Plans | Discontinued operations
Employee benefit plans
Employer contributions	2.3
Expected minimum required funding contributions in 2014	3.0
Postretirement Plans
Employee benefit plans
Direct benefit, net of federal subsidies paid to unfunded plan	14.7
Amount of federal subsidies	0.7
Plan assets	0
Estimated minimum benefit payments, net of subsidies:
2014	14.0
2015	13.5
2016	12.9
2017	12.2
2018	11.6
Subsequent five years	48.4
Postretirement Subsidies
2014	1.4
2015	1.4
2016	1.3
2017	1.3
2018	1.3
Subsequent five years	$ 5.4