Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 30, 2012
CURRENT ASSETS:
Cash and equivalents	$ 70.3	$ 76.3
Trade accounts receivable, less allowances of $9.8 and $10.4, respectively	1,038.8	1,013.9
Prepaid expenses and other current assets	60.0	57.5
Deferred taxes	39.0	44.9
Total current assets	1,208.1	1,192.6
PROPERTY AND EQUIPMENT:
Property and equipment	337.5	337.6
Accumulated depreciation	(250.3)	(247.7)
Net property and equipment	87.2	89.9
NONCURRENT DEFERRED TAXES	103.1	82.8
GOODWILL, NET	90.3	89.5
OTHER ASSETS	227.8	180.9
TOTAL ASSETS	1,716.5	1,635.7
CURRENT LIABILITIES:
Short-term borrowings	83.2	64.1
Accounts payable and accrued liabilities	289.2	295.6
Accrued payroll and related taxes	277.9	264.5
Accrued insurance	31.2	32.8
Income and other taxes	64.9	65.3
Total current liabilities	746.4	722.3
NONCURRENT LIABILITIES:
Accrued insurance	41.4	43.5
Accrued retirement benefits	123.2	111.0
Other long-term liabilities	28.2	17.9
Total noncurrent liabilities	192.8	172.4
Treasury stock, at cost
Paid-in capital	28.9	27.1
Earnings invested in the business	719.1	700.0
Accumulated other comprehensive income	49.8	35.4
Total stockholders' equity	777.3	741.0
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,716.5	1,635.7
Common Class A [Member] | Stockholders Equity [Member]
Capital stock, $1.00 par value
Common stock, value	36.6	36.6
Treasury stock, at cost
Treasury stock, value	(60.0)	(61.0)
Common Class A [Member]
Treasury stock, at cost
Total stockholders' equity	36.6	36.6
Common Class B [Member] | Stockholders Equity [Member]
Capital stock, $1.00 par value
Common stock, value	3.5	3.5
Treasury stock, at cost
Treasury stock, value	(0.6)	(0.6)
Common Class B [Member]
Treasury stock, at cost
Total stockholders' equity	$ 3.5	$ 3.5