Reconciliations of Changes in Benefit Obligations, Plan Assets and Funded Status (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended	6 Months Ended	12 Months Ended
	Sep. 30, 2012	Jun. 30, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of fair value of plan assets [Roll Forward]:
Fair value at end of period			$ 1,691	$ 1,776
United States Pension Plans of US Entity, Defined Benefit
Reconciliation of benefit obligation [Roll Forward]:
Obligation at beginning of period			2,061	1,931
Interest cost			74	85	92
Service cost
Actuarial (gain) loss			(200)	182
Benefit payments			(130)	(137)
Plan amendments
New plans
Settlements
Translation adjustments
Obligation at end of period			1,805	2,061	1,931
Reconciliation of fair value of plan assets [Roll Forward]:
Fair value at beginning of period			1,734	1,497
Actual return on plan assets			5	162
Employer contributions			40	212
Benefit payments			(130)	(137)
Settlements
Translation adjustments
Fair value at end of period			1,649	1,734	1,497
Funded status at end of period			(156)	(327)
Foreign Pension Plans, Defined Benefit
Reconciliation of benefit obligation [Roll Forward]:
Obligation at beginning of period			309	243
Interest cost			11	12	13
Service cost			6	5	5
Actuarial (gain) loss			(1)	51
Benefit payments			(15)	(12)
Plan amendments	6			6
New plans				3
Settlements		(77)	(2)	(3)
Translation adjustments			5	4
Obligation at end of period			313	309	243
Reconciliation of fair value of plan assets [Roll Forward]:
Fair value at beginning of period			42	43
Actual return on plan assets			1	1
Employer contributions			17	12
Benefit payments			(15)	(12)
Settlements		(77)	(2)	(3)
Translation adjustments			(1)	1
Fair value at end of period			42	42	43
Funded status at end of period			(271)	(267)
Foreign Postretirement Benefit Plans, Defined Benefit
Reconciliation of benefit obligation [Roll Forward]:
Obligation at beginning of period			132	137
Interest cost			5	5	7
Service cost			1	1
Actuarial (gain) loss			(12)	(8)
Benefit payments			(6)	(7)
Plan amendments
New plans
Settlements
Translation adjustments			(8)	4
Obligation at end of period			112	132	137
Reconciliation of fair value of plan assets [Roll Forward]:
Fair value at beginning of period			0	0
Actual return on plan assets
Employer contributions			6	7
Benefit payments			(6)	(7)
Settlements
Translation adjustments
Fair value at end of period			0	0	0
Funded status at end of period			$ (112)	$ (132)