Fair Value of Pension Plan Assets (Detail) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 1,691		$ 1,776
Equity Securities [Member] | US All Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	90	[1]	75	[1]
Equity Securities [Member] | US Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	72		132
Equity Securities [Member] | EAFE Composite [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	155		150
Equity Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	76		84
Fixed Income Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	81		52
Fixed Income Securities [Member] | US Corporate Bonds and US Government Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	203	[2]	179	[2]
Fixed Income Securities [Member] | Corporate Bond Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	494		597
Fixed Income Securities [Member] | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	207		232
Fixed Income Securities [Member] | Foreign Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11		13
Alternative Investment [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	83	[3]	78	[3]
Alternative Investment [Member] | Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11	[4]	9	[4]
Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	48		46
Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(28)	[5]	9	[5]
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	188		120
United States Pension Plans of US Entity, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,649		1,734		1,497
Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	42		42		43
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	393		441
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | US All Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	90	[1]	75	[1]
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | US Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	72		132
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | EAFE Composite [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	155		150
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	76		84
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | US Corporate Bonds and US Government Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[2]
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Corporate Bond Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Foreign Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Alternative Investment [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[3]
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Alternative Investment [Member] | Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[4]
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[5]
Fair Value, Inputs, Level 1 [Member] | United States Pension Plans of US Entity, Defined Benefit | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	1,125		1,169
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | US All Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		[1]		[1]
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | US Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | EAFE Composite [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	81		52
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | US Corporate Bonds and US Government Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	203	[2]	179	[2]
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Corporate Bond Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	494		597
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	207		232
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Foreign Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Alternative Investment [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[3]
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Alternative Investment [Member] | Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[4]
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(34)	[5]	4	[5]
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Other securities [Member] | Interest Rate Contract [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	(34)	[3]	4	[3]
Fair Value, Inputs, Level 2 [Member] | United States Pension Plans of US Entity, Defined Benefit | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	174		105
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	31		33
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Equity Securities [Member] | US All Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		[1]		[1]
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Equity Securities [Member] | US Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Equity Securities [Member] | EAFE Composite [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Equity Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | US Corporate Bonds and US Government Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[2]
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | Corporate Bond Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | Foreign Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11		13
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Alternative Investment [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[3]
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Alternative Investment [Member] | Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[4]
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	6	[5]	5	[5]
Fair Value, Inputs, Level 2 [Member] | Foreign Pension Plans, Defined Benefit | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	14		15
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	131		124
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | US All Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		[1]		[1]
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | US Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | EAFE Composite [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Equity Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | US Corporate Bonds and US Government Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[2]
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Corporate Bond Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Fixed Income Securities [Member] | Foreign Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Alternative Investment [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	83	[3]	78	[3]
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Alternative Investment [Member] | Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[4]
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	48		46
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[5]
Fair Value, Inputs, Level 3 [Member] | United States Pension Plans of US Entity, Defined Benefit | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11		9
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Equity Securities [Member] | US All Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets		[1]		[1]
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Equity Securities [Member] | US Large Cap [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Equity Securities [Member] | EAFE Composite [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Equity Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | Emerging Markets [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | US Corporate Bonds and US Government Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[2]
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | Corporate Bond Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | US Treasury Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Fixed Income Securities [Member] | Foreign Government Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Alternative Investment [Member] | Hedge Funds [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[3]
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Alternative Investment [Member] | Insurance Contracts [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	11	[4]	9	[4]
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Real Estate [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Other securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets				[5]
Fair Value, Inputs, Level 3 [Member] | Foreign Pension Plans, Defined Benefit | Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets

[1] This category comprises a combination of small-, mid- and large-cap equity stocks that are allocated at the investment manager's discretion. Investments include common and preferred securities as well as equity funds that invest in these instruments.

[2] This category represents a combination of investment grade corporate bonds, sovereign bonds, Yankee bonds, asset backed securities and U.S. government bonds. Investments include fixed income funds that invest in these instruments.

[3] This category includes fund managers that invest in a well-diversified group of hedge funds where strategies include, but are not limited to, event driven, relative value, long/short market neutral, multistrategy and global macro. Investments may be made directly or through pooled funds.

[4] This category comprises contracts placed with insurance companies where the underlying assets are invested in fixed interest securities.

[5] Other assets in the U.S. include interest rate derivatives which had a market value of $(34) at December 31, 2013 and $4 at December 31, 2012.