Fair Value (Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis) (Details) (Recurring Basis [Member], USD $) In Millions, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Derivative assets included in other current assets	$ 2		$ 6
Derivative assets included in other non-current assets	8		1
Derivative liabilities included in accrued expenses and other current liabilities	3		2
Derivative liabilities included in other non-current liabilities			13
Fair Value [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Total assets	10		13
Total liabilities	3		15
Fair Value [Member] | Interest Rate Contracts [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Derivative assets, fair value	8	[1]	5	[1]
Derivative liabilities, fair value	0		13	[2]
Fair Value [Member] | Foreign Exchange Contracts [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Derivative assets, fair value	2	[1]	2	[1]
Derivative liabilities, fair value	3	[2]	2	[2]
Fair Value [Member] | Securities Available-For-Sale [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Securities available-for-sale			6	[3]
Level 2 [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Total assets	10		7
Total liabilities	3		15
Level 2 [Member] | Interest Rate Contracts [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Derivative assets, fair value	8	[1]	5	[1]
Derivative liabilities, fair value	0		13	[2]
Level 2 [Member] | Foreign Exchange Contracts [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Derivative assets, fair value	2	[1]	2	[1]
Derivative liabilities, fair value	3	[2]	2	[2]
Level 2 [Member] | Securities Available-For-Sale [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Securities available-for-sale
Level 3 [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Total assets	0		6
Total liabilities
Level 3 [Member] | Interest Rate Contracts [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Derivative assets, fair value
Derivative liabilities, fair value
Level 3 [Member] | Foreign Exchange Contracts [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Derivative assets, fair value
Derivative liabilities, fair value
Level 3 [Member] | Securities Available-For-Sale [Member]
Summary Of Assets And Liabilities Measured At Fair Value On Recurring Basis [Line Items]
Securities available-for-sale			$ 6	[3]

[1] Included in other current assets ($2 million and $6 million as of June 30, 2014 and December 31, 2013, respectively) and other non-current assets ($8 million and $1 million as of June 30, 2014 and December 31, 2013, respectively) on the Consolidated Balance Sheets; carrying value is equal to estimated fair value.

[2] Included in accrued expenses and other current liabilities ($3 million and $2 million as of June 30, 2014 and December 31, 2013, respectively) and other non-current liabilities ($13 million as of December 31, 2013) on the Consolidated Balance Sheets; carrying value is equal to estimated fair value.

[3] Included in other non-current assets on the Consolidated Balance Sheet.