Benefit Plans (Components of Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
U.S. Plans - Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 2
Interest cost	4	4
Expected return on plan assets	(4)	(4)
Amortization:
Net loss	2	3
Prior service cost	0	0
Net periodic pension cost	3	5
Non-U.S. Plans - Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	52	65
Interest cost	51	43
Expected return on plan assets	(88)	(87)
Amortization:
Net loss	28	51
Prior service cost	2	2
Net periodic pension cost	$ 45	$ 74