Pension and Other Postretirement Benefits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Net periodic pension and other postretirement benefit costs (credits): [Abstract]
Net periodic benefit costs (credits)	$ 16	$ 14	$ 56	$ 43
U.S. pension plans [Member]
Net periodic pension and other postretirement benefit costs (credits): [Abstract]
Service cost	11	10	33	32
Interest cost	21	22	64	66
Expected return on plan assets	(37)	(38)	(110)	(116)
Actuarial and investment loss amortization	3	0	9	0
Net periodic benefit costs (credits)	(2)	(6)	(4)	(18)
Non-U.S. pension plans [Member]
Net periodic pension and other postretirement benefit costs (credits): [Abstract]
Service cost	8	7	25	22
Interest cost	8	12	28	35
Expected return on plan assets	(6)	(6)	(19)	(19)
Settlements (gain) loss	0	0	0	(1)
Prior service cost amortization	1	1	2	3
Actuarial and investment loss amortization	1	1	5	3
Net periodic benefit costs (credits)	12	15	41	43
U.S. other postretirement benefit plans [Member]
Net periodic pension and other postretirement benefit costs (credits): [Abstract]
Service cost	1	1	3	3
Interest cost	3	4	10	11
Actuarial and investment loss amortization	1	0	2	2
Net periodic benefit costs (credits)	5	5	15	16
Non-U.S. other postretirement benefit plans [Member]
Net periodic pension and other postretirement benefit costs (credits): [Abstract]
Interest cost	0	0	1	1
Actuarial and investment loss amortization	1	0	3	1
Net periodic benefit costs (credits)	1	0	4	2
Pension plans [Member]
Net periodic pension and other postretirement benefit costs (credits): [Abstract]
Net periodic benefit costs (credits)	10	9	37	25
Other postretirement benefit plans [Member]
Net periodic pension and other postretirement benefit costs (credits): [Abstract]
Net periodic benefit costs (credits)	$ 6	$ 5	$ 19	$ 18