Consolidated Balance Sheets (Unaudited) (USD $) In Millions, unless otherwise specified	Sep. 30, 2012	Jan. 01, 2012
CURRENT ASSETS:
Cash and equivalents	$ 70.3	$ 81.0
Trade accounts receivable, less allowances of $11.9 and $13.4, respectively	1,018.8	944.9
Prepaid expenses and other current assets	62.9	50.6
Deferred taxes	38.1	38.2
Total current assets	1,190.1	1,114.7
PROPERTY AND EQUIPMENT:
Property and equipment	336.0	326.9
Accumulated depreciation	(245.6)	(236.3)
Net property and equipment	90.4	90.6
NONCURRENT DEFERRED TAXES	88.8	94.1
GOODWILL, NET	91.2	90.2
OTHER ASSETS	174.8	152.1
TOTAL ASSETS	1,635.3	1,541.7
CURRENT LIABILITIES:
Short-term borrowings	83.6	96.3
Accounts payable and accrued liabilities	279.1	237.2
Accrued payroll and related taxes	269.9	271.4
Accrued insurance	28.8	31.5
Income and other taxes	62.7	61.3
Total current liabilities	724.1	697.7
NONCURRENT LIABILITIES:
Accrued insurance	48.9	53.5
Accrued retirement benefits	108.5	91.1
Other long-term liabilities	25.1	23.7
Total noncurrent liabilities	182.5	168.3
STOCKHOLDERS' EQUITY:
Paid-in capital	27.7	28.8
Earnings invested in the business	693.0	657.5
Accumulated other comprehensive income	31.0	16.2
Total stockholders' equity	728.7	675.7
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	1,635.3	1,541.7
Common Class A [Member] | Stockholders Equity [Member]
STOCKHOLDERS' EQUITY:
Common stock, value	36.6	36.6
Treasury stock, value	(62.5)	(66.3)
Common Class A [Member]
STOCKHOLDERS' EQUITY:
Total stockholders' equity	36.6	36.6
Common Class B [Member] | Stockholders Equity [Member]
STOCKHOLDERS' EQUITY:
Common stock, value	3.5	3.5
Treasury stock, value	(0.6)	(0.6)
Common Class B [Member]
STOCKHOLDERS' EQUITY:
Total stockholders' equity	$ 3.5	$ 3.5