Contingencies (Tables)

9 Months Ended

Sep. 30, 2013

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)	September 30, 2013		December 31, 2012
Assets:
Prepayments and other current assets	$	—	$	—
Other non-current assets	109.0		85.6
Total insurance assets	$	109.0	$	85.6
Liabilities:
Accounts payable and accrued expenses	$	44.1	$	36.5
Other non-current liabilities	64.9		49.1
Total accrued liabilities	$	109.0	$	85.6