XML 30 R43.htm IDEA: XBRL DOCUMENT v2.4.0.8
Debt - Debt (Parenthetical) (Detail)
Mar. 31, 2014
Dec. 31, 2013
Senior Notes, interest at 6.125% payable semiannually, principal due on August 15, 2015 [Member]
    
Debt Instrument [Line Items]    
Senior notes interest rate 6.125% 6.125%
Senior note due date Aug. 15, 2015 Aug. 15, 2015
Senior Notes, interest at 1.35% payable semiannually, principal due on December 1, 2017 [Member]
    
Debt Instrument [Line Items]    
Senior notes interest rate 1.35% 1.35%
Senior note due date Dec. 01, 2017 Dec. 01, 2017
Senior Notes, interest at 2.6% payable semiannually, principal due on December 1, 2022 [Member]
    
Debt Instrument [Line Items]    
Senior notes interest rate 2.60% 2.60%
Senior note due date Dec. 01, 2022 Dec. 01, 2022
Senior Notes, interest at 3.95% payable semiannually, principal due on December 1, 2042 [Member]
    
Debt Instrument [Line Items]    
Senior notes interest rate 3.95% 3.95%
Senior note due date Dec. 01, 2042 Dec. 01, 2042