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Long-Term Debt (Parenthetical) (Detail)
12 Months Ended
Dec. 31, 2013
Notes (USD)
 
Debt Instrument [Line Items]  
Debt instrument, interest rate, effective percentage rate range, minimum 4.125%
Debt instrument, interest rate, effective percentage rate range, maximum 7.00%
Debt instrument, interest rate, effective percentage rate range, average 6.08%
Maturity date 2040
Euro Notes
 
Debt Instrument [Line Items]  
Debt instrument, interest rate, effective percentage rate range, minimum 0.72%
Debt instrument, interest rate, effective percentage rate range, maximum 6.25%
Debt instrument, interest rate, effective percentage rate range, average 3.04%
Maturity date 2021
Pound Sterling Notes
 
Debt Instrument [Line Items]  
Debt instrument, interest rate, effective percentage rate range, minimum 5.375%
Debt instrument, interest rate, effective percentage rate range, maximum 7.25%
Debt instrument, interest rate, effective percentage rate range, average 4.94%
Maturity date 2018