Short-Term And Long-Term Debt (Narrative) (Details) (USD $)	12 Months Ended
	Dec. 31, 2011	Jan. 01, 2011
Debt Instrument [Line Items]
Long-term debt and notes payable maturity, 2012	$ 16,200,000
Long-term debt and notes payable maturity, 2014	100,000,000
Repayments of long-term debt	200,000,000	150,000,000
Debt instrument, restrictive covenants	(i) a ratio of total debt to the sum of total debt plus shareholders' equity (including noncontrolling interests) of not greater than 0.60 to 1.00; or (ii) a ratio of total debt to the sum of net income plus interest expense, income taxes, depreciation, amortization and other non-cash or extraordinary charges for the preceding four fiscal quarters then ended of not greater than 3.50 to 1.00. As of 2011 year end, the company's actual ratios of 0.39 and 1.71, respectively, were both within the permitted ranges set forth in this financial covenant.
Borrowing under new revolving facility	500,000,000
Average commercial paper and notes payable outstanding	15,800,000	15,100,000
Commercial paper outstanding	0	0
Debt, weighted-average interest rate	$ 6.14%	$ 5.27%
Weighted-average interest rate on outstanding notes payable	$ 6.57%	$ 5.54%
Revolving credit facility, termination date	August 10, 2012
6.25% Unsecured Notes Due August 2011 [Member]
Debt Instrument [Line Items]
Repayments of long-term debt	200,000,000
Debt instrument maturity date	August 15, 2011
5 Year Multi-Currency Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Revolving credit facility, amount available	500,000,000
Revolving credit facility, outstanding amount	0
Debt maturity term	five-year
Revolving credit facility, termination date	December 8, 2016
364 Day Loan And Servicing Agreement [Member]
Debt Instrument [Line Items]
Debt maturity term	364-day
Debt instrument maturity date	September 28, 2012
Secure borrowings	200,000,000
Commercial paper outstanding	$ 0	$ 0