CONSOLIDATED BALANCE SHEETS UNAUDITED Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Allowances on accounts receivable	$ 358,713	$ 401,027
Accumulated depreciation on properties and equipment	299,900	284,533
Accumulated amortization on identifiable intangible assets	$ 246,200	$ 219,107
Stockholder's equity:
Preferred stock, no par value (in dollars per share)	$ 0.00	$ 0.00
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1.00	$ 1.00
Common stock, shares authorized (in shares)	200,000,000	200,000,000
Common stock, shares issued (in shares)	131,756,500	129,634,300
Treasury stock, shares (in shares)	18,132,600	13,011,700