Benefit Plans (Components of Net Periodic Benefit Cost) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
U.S. Plans - Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 5	$ 5
Interest cost	4	4	12	12
Expected return on plan assets	(3)	(3)	(11)	(11)
Amortization:
Net loss	2	2	8	7
Prior service cost	0	0	1	1
Net transition obligation	0	0	0	0
Net periodic pension cost	4	4	15	14
Non-U.S. Plans - Pension [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	63	47	190	143
Interest cost	42	46	126	142
Expected return on plan assets	(84)	(81)	(257)	(243)
Amortization:
Net loss	49	30	151	92
Prior service cost	2	4	7	8
Net transition obligation	0	1	1	1
Net periodic pension cost	$ 72	$ 47	$ 218	$ 143