XML 27 R70.htm IDEA: XBRL DOCUMENT v2.4.0.8
Summary of Long-Term Debt Outstanding (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Debt [Line Items]    
Term loan $ 300,000 $ 125,000
Revolving line of credit   110,000
Long-Term Debt Outstanding 1,514,870 1,000,000
Less: Current maturities of long-term debt 9,512  
Total 1,505,358 1,000,000
4.44% July 2003 Senior Notes Due Fiscal 2014
    
Debt [Line Items]    
Long-Term Debt Outstanding   140,000
4.61% July 2003 Senior Notes Due Fiscal 2016
    
Debt [Line Items]    
Long-Term Debt Outstanding 35,000 35,000
3.28% September 2010 Senior Notes Due Fiscal 2016
    
Debt [Line Items]    
Long-Term Debt Outstanding 42,500 42,500
3.90% September 2010 Senior Notes Due Fiscal 2018
    
Debt [Line Items]    
Long-Term Debt Outstanding 44,500 44,500
3.95% September 2010 Senior Notes Due Fiscal 2018
    
Debt [Line Items]    
Long-Term Debt Outstanding 25,000 25,000
4.12% September 2010 Senior Notes Due Fiscal 2019
    
Debt [Line Items]    
Long-Term Debt Outstanding 25,000 25,000
4.17% September 2010 Senior Notes Due Fiscal 2019
    
Debt [Line Items]    
Long-Term Debt Outstanding 25,000 25,000
4.33% September 2010 Senior Notes Due Fiscal 2020
    
Debt [Line Items]    
Long-Term Debt Outstanding 50,000 50,000
4.51% September 2010 Senior Notes Due Fiscal 2021
    
Debt [Line Items]    
Long-Term Debt Outstanding 100,000 100,000
4.56% September 2010 Senior Notes Due Fiscal 2021
    
Debt [Line Items]    
Long-Term Debt Outstanding 65,000 65,000
4.61% September 2010 Senior Notes Due Fiscal 2023
    
Debt [Line Items]    
Long-Term Debt Outstanding 48,000 48,000
4.06% August 2011 Senior Notes Due Fiscal 2019
    
Debt [Line Items]    
Long-Term Debt Outstanding 50,000 50,000
4.54% August 2011 Senior Notes Due Fiscal 2022
    
Debt [Line Items]    
Long-Term Debt Outstanding 65,000 65,000
4.64% August 2011 Senior Notes Due Fiscal 2022
    
Debt [Line Items]    
Long-Term Debt Outstanding 50,000 50,000
4.26% September 2013 senior notes due fiscal 2021
    
Debt [Line Items]    
Long-Term Debt Outstanding 123,000  
5.01% September 2013 senior notes due fiscal 2024
    
Debt [Line Items]    
Long-Term Debt Outstanding 250,000  
5.16% September 2013 senior notes due fiscal 2026
    
Debt [Line Items]    
Long-Term Debt Outstanding 127,000  
Norwegian Kroner Denominated Notes Due Fiscal Two Thousand Twenty Five
    
Debt [Line Items]    
Long-Term Debt Outstanding 29,837  
Norwegian Kroner Denominated Notes Due Fiscal Two Thousand Twenty Six
    
Debt [Line Items]    
Long-Term Debt Outstanding 50,028  
Norwegian Kroner Denominated Borrowing Agreement Due Fiscal Two Thousand Fifteen
    
Debt [Line Items]    
Long-Term Debt Outstanding 5,837  
Norwegian Kroner Denominated Borrowing Agreement Due Fiscal Two Thousand Nineteen
    
Debt [Line Items]    
Long-Term Debt Outstanding $ 4,168