Note 8   Contingencies We record self-insurance accruals based upon estimates of the aggregate liability of claim costs in excess of our insurance coverage. Accruals are estimated using certain actuarial assumptions followed in the insurance industry and our historical experience. The majority of these claims are legal claims and our liability estimate is primarily related to the cost to defend these claims. We do not accrue for settlements, judgments, monetary fines or penalties until such amounts are probable and estimable. Under authoritative accounting guidance, if the range of possible loss is broad, the liability accrued should be based on the lower end of the range. In the ordinary course of business there have arisen various legal proceedings, investigations or claims now pending against us or our subsidiaries. In accordance with applicable accounting guidance, we record accruals for certain of our outstanding legal proceedings, investigations or claims when it is probable that a liability will be incurred and the amount of loss can be reasonably estimated. We evaluate, on a quarterly basis, developments in legal proceedings, investigations or claims that could affect the amount of any accrual, as well as any developments that would make a loss contingency both probable and reasonably estimable. We disclose the amount of the accrual if the financial statements would be otherwise misleading, which was not the case for the three months ending March 31, 2011 and 2010. When a loss contingency is not both probable and estimable, we do not establish an accrued liability. However, if the loss (or an additional loss in excess of the accrual) is at least a reasonable possibility and material, then we disclose an estimate of the possible loss or range of loss, if such estimate can be made, or disclose that an estimate cannot be made. The assessments of whether a loss is probable or a reasonable possibility, and whether the loss or a range of loss is estimable, often involve a series of complex judgments about futur