External financing (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Jul. 02, 2011
Components of short-term debt
Bank credit facilities	$ 189,524	$ 81,951
Borrowings under the accounts receivable securitization program	610,000	160,000
Other debt due within one year	1,039	1,128
Short-term debt	$ 800,563	$ 243,079