IRA to Roth Conversion with Non-deductible contributions of one account verses other IRAs with no Non-deductible contributions

I have one IRA account with a portion of it containing Non-deductible contributions that I converted 50% of its assets to a Roth account.  I also own IRAs/rollovers with other investment firms.  Do I report the value of the IRA account I am converting on line 6, or do I report the value of all of my IRA/rollover 401K accounts?