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Shareholders' equity (Tables)
6 Months Ended
Dec. 31, 2011
Equity [Abstract]  
Comprehensive income

 
Second Quarters Ended
 
Six Months Ended
 
December 31,
2011
 
January 1,
2011
 
December 31,
2011
 
January 1,
2011
 
(Thousands)
Net income
$
147,023

 
$
141,034

 
$
286,053

 
$
279,208

Foreign currency translation adjustments
(96,211
)
 
(42,099
)
 
(282,469
)
 
133,553

Total comprehensive income
$
50,812

 
$
98,935

 
$
3,584

 
$
412,761