Postretirement Benefit Plans (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Change in benefit obligation:
Benefit obligation at end of year	$ 840	$ 855
Change in plan assets:
Ending Balance	524	477
Funded (unfunded) status of the plans	(316)	(378)
Domestic defined benefit pension plans
Defined Benefit Plan Disclosure
Defined Benefit Plan, Net Increase (Decrease) in Plan Assets related to Plan Amendments, Settlements and Curtailments	0	0
Change in benefit obligation:
Benefit obligation at beginning of year	83	71
Service cost	3	3	2
Interest cost	3	3	3
Benefits paid	(3)	(3)
Actuarial loss (gain)	(8)	9
Defined Benefit Plan, Net Increase (Decrease) in Obligation related to Plan Amendments, Settlements and Curtailments	(4)	0
Foreign currency translation/other	0	0
Benefit obligation at end of year	74	83	71
Change in plan assets:
Beginning Balance	51	44
Employer contributions	4	5
Actual return on plan assets	6	5
Benefits paid	(3)	(3)
Foreign currency translation/Other	0	0
Ending Balance	58	51	44
Funded (unfunded) status of the plans	(16)	(32)
International defined benefit pension plans
Defined Benefit Plan Disclosure
Defined Benefit Plan, Net Increase (Decrease) in Plan Assets related to Plan Amendments, Settlements and Curtailments	(1)	(1)
Change in benefit obligation:
Benefit obligation at beginning of year	707	599
Service cost	14	11	6
Interest cost	28	29	12
Benefits paid	(32)	(33)
Actuarial loss (gain)	(9)	69
Defined Benefit Plan, Net Increase (Decrease) in Obligation related to Plan Amendments, Settlements and Curtailments	(2)	0
Foreign currency translation/other	(3)	32
Benefit obligation at end of year	703	707	599
Change in plan assets:
Beginning Balance	426	373
Employer contributions	36	38
Actual return on plan assets	42	37
Benefits paid	(32)	(33)
Foreign currency translation/Other	(5)	12
Ending Balance	466	426	373
Funded (unfunded) status of the plans	$ (237)	$ (281)