Defined Benefit Postretirement Plans and Defined Contribution Plan (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Accumulated benefit obligation	$ 1,359,000,000	$ 1,442,000,000
United States Pension Plans of US Entity, Defined Benefit [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected benefit obligation	(933,000,000)	(1,146,000,000)
Accumulated benefit obligation	791,000,000	937,000,000
Fair value of plan assets	625,000,000	630,000,000
Change in benefit obligations:
Benefit obligations at January 1	1,146,000,000	986,000,000
Service cost	33,000,000	31,000,000	28,000,000
Interest cost	40,000,000	42,000,000	44,000,000
Actuarial loss	(140,000,000)	196,000,000
Foreign currency exchange rate changes	0	0
Benefits paid	(146,000,000)	(109,000,000)
Benefit obligations at December 31	933,000,000	1,146,000,000	986,000,000
Change in plan assets:
Fair value of plan assets at January 1	630,000,000	516,000,000
Actual return on plan assets	65,000,000	66,000,000
Employer contributions	76,000,000	157,000,000
Foreign currency exchange rate changes	0	0
Benefits paid	(146,000,000)	(109,000,000)
Fair value of plan assets at December 31	625,000,000	630,000,000	516,000,000
Funded status of plans at December 31
Funded status of plans at December 31	(308,000,000)	(516,000,000)
Amounts recognized in the consolidated balance sheet:
Current liabilities	(16,000,000)	(17,000,000)
Noncurrent liabilities	(292,000,000)	(499,000,000)
Accrued benefit cost	(308,000,000)	(516,000,000)
Pretax amounts in accumulated other comprehensive loss:
Net loss	262,000,000	511,000,000
Prior service cost (credit)	15,000,000	21,000,000
Foreign Pension Plans, Defined Benefit [Member]
Defined Benefit Plan, Pension Plans with Accumulated Benefit Obligations in Excess of Plan Assets [Abstract]
Projected benefit obligation		(565,000,000)
Accumulated benefit obligation		505,000,000
Fair value of plan assets		500,000,000
Change in benefit obligations:
Benefit obligations at January 1	565,000,000	465,000,000
Service cost	22,000,000	19,000,000	19,000,000
Interest cost	24,000,000	22,000,000	22,000,000
Actuarial loss	40,000,000	49,000,000
Foreign currency exchange rate changes	11,000,000	25,000,000
Benefits paid	(13,000,000)	(15,000,000)
Benefit obligations at December 31	649,000,000	565,000,000	465,000,000
Change in plan assets:
Fair value of plan assets at January 1	500,000,000	412,000,000
Actual return on plan assets	74,000,000	57,000,000
Employer contributions	23,000,000	24,000,000
Foreign currency exchange rate changes	13,000,000	22,000,000
Benefits paid	(13,000,000)	(15,000,000)
Fair value of plan assets at December 31	597,000,000	500,000,000	412,000,000
Funded status of plans at December 31
Funded status of plans at December 31	(52,000,000)	(65,000,000)
Amounts recognized in the consolidated balance sheet:
Current liabilities	0	0
Noncurrent liabilities	(52,000,000)	(65,000,000)
Accrued benefit cost	(52,000,000)	(65,000,000)
Pretax amounts in accumulated other comprehensive loss:
Net loss	59,000,000	74,000,000
Prior service cost (credit)	9,000,000	10,000,000
Other Postretirement Benefit Plans, Defined Benefit [Member]
Change in benefit obligations:
Benefit obligations at January 1	311,000,000	301,000,000
Service cost	4,000,000	4,000,000	4,000,000
Interest cost	12,000,000	14,000,000	16,000,000
Actuarial loss	(31,000,000)	8,000,000
Foreign currency exchange rate changes	0	0
Benefits paid	(17,000,000)	(16,000,000)
Benefit obligations at December 31	279,000,000	311,000,000	301,000,000
Change in plan assets:
Fair value of plan assets at January 1	0	0
Actual return on plan assets	0	0
Employer contributions	0	0
Foreign currency exchange rate changes	0	0
Benefits paid	(17,000,000)	(16,000,000)
Fair value of plan assets at December 31	0	0	0
Funded status of plans at December 31
Funded status of plans at December 31	(279,000,000)	(311,000,000)
Amounts recognized in the consolidated balance sheet:
Current liabilities	(19,000,000)	(19,000,000)
Noncurrent liabilities	(260,000,000)	(292,000,000)
Accrued benefit cost	(279,000,000)	(311,000,000)
Pretax amounts in accumulated other comprehensive loss:
Net loss	(8,000,000)	23,000,000
Prior service cost (credit)	$ (5,000,000)	$ (11,000,000)