Retirement and Postretirement Benefits (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
U.S Defined Benefit Plans [Member]
Components of the net periodic cost for retirement and postretirement benefits
Service cost	$ 5,800,000	$ 6,100,000	$ 11,500,000	$ 12,200,000
Interest cost	4,300,000	3,800,000	8,700,000	7,600,000
Expected return on plan assets	(5,500,000)	(5,100,000)	(11,000,000)	(10,200,000)
Amortization of prior service benefit	100,000	0	200,000	0
Amortization of unrecognized net loss (gain)	2,200,000	3,400,000	4,200,000	6,900,000
Net periodic cost (benefit) recognized	6,900,000	8,200,000	13,600,000	16,500,000
Non-U.S Defined Benefit Plans [Member]
Components of the net periodic cost for retirement and postretirement benefits
Service cost	1,800,000	1,700,000	3,500,000	3,400,000
Interest cost	3,700,000	3,400,000	7,400,000	6,800,000
Expected return on plan assets	(2,600,000)	(2,300,000)	(5,300,000)	(4,700,000)
Amortization of prior service benefit	0	0	100,000	0
Amortization of unrecognized net loss (gain)	1,700,000	1,600,000	3,400,000	3,300,000
Net periodic cost (benefit) recognized	4,600,000	4,400,000	9,100,000	8,800,000
Postretirement Medical Benefits [Member]
Components of the net periodic cost for retirement and postretirement benefits
Service cost	0	0	0	0
Interest cost	300,000	200,000	600,000	500,000
Expected return on plan assets	0	0	0	0
Amortization of prior service benefit	0	0	0	0
Amortization of unrecognized net loss (gain)	(200,000)	(300,000)	(600,000)	(600,000)
Net periodic cost (benefit) recognized	$ 100,000	$ (100,000)	$ 0	$ (100,000)