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Fair Value Measurements (Narrative) (Details)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Selling, general and administrative expenses
USD ($)
Dec. 31, 2012
Selling, general and administrative expenses
USD ($)
Apr. 01, 2014
Japan, Yen
JPY (¥)
Derivative [Line Items]      
Investment foreign currency, contract, foreign currency amount     ¥ 184invest_InvestmentForeignCurrencyContractForeignCurrencyAmount
/ us-gaap_CurrencyAxis
= currency_JPY
Exchange rate of Japanese yen per United States dollar     102.25us-gaap_DerivativeForwardExchangeRate1
/ us-gaap_CurrencyAxis
= currency_JPY
Pre-tax income related to changes in the fair value of currency swap $ 14us-gaap_DerivativeGainLossOnDerivativeNet
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember
$ 22us-gaap_DerivativeGainLossOnDerivativeNet
/ us-gaap_IncomeStatementLocationAxis
= us-gaap_SellingGeneralAndAdministrativeExpensesMember