Contingencies (Tables)

6 Months Ended

Jun. 30, 2011

Commitments and Contingencies Disclosure [Abstract]

Estimated future settlement of existing claims

The amounts recorded in the Condensed Consolidated Balance Sheets related to the estimated future settlement of existing claims are as follows:

(millions of dollars)	June 30, 2011		December 31, 2010
Assets:
Prepayments and other current assets	$	26.6	$	25.8
Other non-current assets	28.6		24.8
Total insurance assets	$	55.2	$	50.6
Liabilities:
Accounts payable and accrued expenses	$	26.6	$	25.8
Other non-current liabilities	28.6		24.8
Total accrued liabilities	$	55.2	$	50.6