Cellular service provider Idea has announced a new STD tariff of 99 paise a minute for its customers of Delhi and national capital region for calls made to any private GSM mobiles anywhere in the country.Besides prepaid users, the offer is also applicable to all Idea post-paid subscribers on the new Idea India plans.Idea has introduced these new tariffs from July 6 for its Delhi and NCR customers wherein all private GSM calls can be made for 99 paisa for local and STD, while the Idea-to-local Idea will be charged at 75 paisa.Under this plan, STD from Idea mobile phones to BSNL, MTNL, fixed wireless, will will cost Rs 2.75 paise a minute while the local calls to these phones will be charged Rs 1.75 paise unit.Local SMS will cost Rs 1 from the earlier Rs 1.50, which is lower than most other operators, and all these at no daily deductions or additional rentals, it said.Rajendra Chourasia, circle head, Delhi NCR, Idea Cellular said, this tariff of STD at 99 paisa is Idea's next big tariff innovation after its highly successful Idea-to-Idea rate of 75 paisa per minute.