This excerpt taken from the CVS 10-K filed Feb 27, 2007.
Accumulated other comprehensive loss ~ Accumulated other comprehensive loss consists of a minimum pension liability, unrealized losses on derivatives and adjustment to initially apply SFAS No. 158. Due to the application of SFAS No. 158 in 2006, there was no minimum pension liability recorded as of December 30, 2006. In accordance with SFAS No. 158, the amount included in accumulated other comprehensive income related to the Companys pension and post retirement plans was $87.4 million pre-tax ($55.4 million after-tax) as of December 30, 2006. The minimum pension liability totaled $117.0 million pre-tax ($73.4 million after-tax) as of December 31, 2005. The unrealized loss on derivatives totaled $27.2 million pre-tax ($17.2 million after-tax) and $26.7 million pre-tax ($16.9 million after-tax) as of December 30, 2006 and December 31, 2005, respectively.