Acquisitions (Tables)

12 Months Ended

Mar. 31, 2014

Business Combinations [Abstract]

Allocation of acquisition purchase price and estimated useful lives

The purchase price allocation as of March 31, 2014 was as follows:

(dollars in millions)	Layer 7			Estimated Useful Life
Finite-lived intangible assets (1)	$	26		3 years
Purchased software	87			5 years
Goodwill	55			Indefinite
Deferred tax liabilities	(13		)	—
Other assets net of other liabilities assumed (2)	—			—
Purchase price	$	155

(1) Includes customer relationships and trade names.

(2) Includes approximately $9 million of cash acquired.