Supplemental Statement of Cash Flows Information 2 (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Supplemental Cash Flow Information [Abstract]    
Interest payments, net $ 65 $ 56
Income taxes paid, net 238 353
Excess tax benefits from share-based incentive awards included in financing activities from continuing operations 3 4
Share-based incentive awards, Non-cash financing activities 43 47
Withholding taxes on share-based incentive awards, Non-cash financing activities 27 28
Discretionary stock contributions to CA, Inc. Savings Harvest Plan, Non-cash financing activities 26 28
Treasury common shares issued in connection with Employee Stock Purchase Plan, Non-cash financing activities $ 5 $ 4