Ca (CA) 10-Q 23 Oct 14 2015 Q2 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	6 Months Ended
	Sep. 30, 2014	Oct. 16, 2014
Document and Entity Information [Abstract]	'	'
Entity Registrant Name	'CA, INC.	'
Entity Central Index Key	'0000356028	'
Document Type	'10-Q	'
Document Period End Date	30-Sep-14	'
Amendment Flag	'false	'
Document Fiscal Year Focus	'2015	'
Document Fiscal Period Focus	'Q2	'
Current Fiscal Year End Date	'--03-31	'
Entity Filer Category	'Large Accelerated Filer	'
Entity Common Stock, Shares Outstanding	'	444,906,148

Condensed_Consolidated_Balance

Condensed Consolidated Balance Sheets (USD $)	Sep. 30, 2014	Mar. 31, 2014
In Millions, unless otherwise specified
Current assets:	'	'
Cash and cash equivalents	$3,193	$3,252
Trade accounts receivable, net	511	800
Deferred income taxes	328	315
Other current assets	199	192
Total current assets	4,231	4,559
Property and equipment, net of accumulated depreciation of $845 and $828, respectively	278	295
Goodwill	5,811	5,922
Capitalized software and other intangible assets, net	869	1,063
Deferred income taxes	67	59
Other noncurrent assets, net	116	118
Total assets	11,372	12,016
Current liabilities:	'	'
Current portion of long-term debt	510	514
Accounts payable	111	129
Accrued salaries, wages and commissions	190	275
Accrued expenses and other current liabilities	429	510
Deferred revenue (billed or collected)	1,957	2,419
Taxes payable, other than income taxes payable	32	66
Federal, state and foreign income taxes payable	55	0
Deferred income taxes	6	9
Total current liabilities	3,290	3,922
Long-term debt, net of current portion	1,253	1,252
Federal, state and foreign income taxes payable	155	182
Deferred income taxes	45	67
Deferred revenue (billed or collected)	779	872
Other noncurrent liabilities	107	151
Total liabilities	5,629	6,446
Stockholders' equity:	'	'
Preferred stock, no par value, 10,000,000 shares authorized; No shares issued and outstanding	0	0
Common stock, $0.10 par value, 1,100,000,000 shares authorized; 589,695,081 and 589,695,081 shares issued; 440,334,597 and 438,740,478 shares outstanding, respectively	59	59
Additional paid-in capital	3,588	3,610
Retained earnings	6,069	5,818
Accumulated other comprehensive loss	-255	-171
Treasury stock, at cost, 149,360,484 and 150,954,603 shares, respectively	-3,718	-3,746
Total stockholders' equity	5,743	5,570
Total liabilities and stockholders' equity	$11,372	$12,016

Condensed_Consolidated_Balance1

Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Sep. 30, 2014	Mar. 31, 2014
In Millions, except Share data, unless otherwise specified
Statement of Financial Position [Abstract]	'	'
Accumulated depreciation	$845	$828
Preferred stock, No par value (in dollars per share)	$0	$0
Preferred stock, Shares authorized	10,000,000	10,000,000
Preferred stock, Shares issued	0	0
Preferred stock, Shares outstanding	0	0
Common stock, Par value (in dollars per share)	$0.10	$0.10
Common stock, Shares authorized	1,100,000,000	1,100,000,000
Common stock, Shares issued	589,695,081	589,695,081
Common stock, Shares outstanding	440,334,597	438,740,478
Treasury stock, Shares	149,360,484	150,954,603

Condensed_Consolidated_Stateme

Condensed Consolidated Statements of Operations (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Revenue:	'	'	'	'
Subscription and maintenance	$908	$922	$1,817	$1,844
Professional services	91	97	178	195
Software fees and other	80	86	153	161
Total revenue	1,079	1,105	2,148	2,200
Expenses:	'	'	'	'
Costs of licensing and maintenance	71	71	143	139
Cost of professional services	88	88	169	176
Amortization of capitalized software costs	75	69	142	135
Selling and marketing	253	248	499	517
General and administrative	87	91	179	182
Product development and enhancements	150	142	300	274
Depreciation and amortization of other intangible assets	34	37	68	73
Other expenses, net	1	14	15	140
Total expenses before interest and income taxes	759	760	1,515	1,636
Income from continuing operations before interest and income taxes	320	345	633	564
Interest expense, net	12	13	26	24
Income from continuing operations before income taxes	308	332	607	540
Income tax expense (benefit)	73	101	160	-21
Income from continuing operations	235	231	447	561
Income from discontinued operations, net of income taxes	21	9	26	14
Net income	$256	$240	$473	$575
Basic income per common share:	'	'	'	'
Income from continuing operations (in dollars per share)	$0.53	$0.51	$1.01	$1.24
Income from discontinued operations (in dollars per share)	$0.05	$0.02	$0.06	$0.03
Net income (in dollars per share)	$0.58	$0.53	$1.07	$1.27
Basic weighted average shares used in computation	440	448	440	449
Diluted income per common share:	'	'	'	'
Income from continuing operations (in dollars per share)	$0.53	$0.51	$1	$1.23
Income from discontinued operations (in dollars per share)	$0.05	$0.02	$0.06	$0.03
Net income (in dollars per share)	$0.58	$0.53	$1.06	$1.26
Diluted weighted average shares used in computation	441	450	441	450

Condensed_Consolidated_Stateme1

Condensed Consolidated Statements of Comprehensive Income (Unaudited) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]	'	'	'	'
Net income	$256	$240	$473	$575
Other comprehensive (loss) income:	'	'	'	'
Foreign currency translation adjustments	-94	23	-84	-20
Total other comprehensive (loss) income	-94	23	-84	-20
Comprehensive income	$162	$263	$389	$555

Condensed_Consolidated_Stateme2

Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Operating activities from continuing operations:	'	'
Net income	$473	$575
Income from discontinued operations	-26	-14
Income from continuing operations	447	561
Adjustments to reconcile income from continuing operations to net cash provided by operating activities:	'	'
Depreciation and amortization	210	208
Deferred income taxes	-49	-59
Provision for bad debts	1	5
Share-based compensation expense	42	40
Asset impairments and other non-cash items	0	4
Foreign currency transaction losses	3	2
Changes in other operating assets and liabilities, net of effect of acquisitions:	'	'
Decrease in trade accounts receivable	263	259
Decrease in deferred revenue	-497	-580
Decrease in taxes payable, net	-42	-270
(Decrease) increase in accounts payable, accrued expenses and other	-22	12
Decrease in accrued salaries, wages and commissions	-79	-71
Changes in other operating assets and liabilities	-45	-35
Net cash provided by operating activities - continuing operations	232	76
Investing activities from continuing operations:	'	'
Acquisitions of businesses, net of cash acquired, and purchased software	-12	-125
Purchases of property and equipment	-34	-35
Capitalized software development costs	0	-35
Purchases of short-term investments	0	-9
Maturities of short-term investments	0	184
Net cash used in investing activities - continuing operations	-46	-20
Financing activities from continuing operations:	'	'
Dividends paid	-222	-228
Purchases of common stock	-50	-200
Notional pooling borrowings	2,703	1,609
Notional pooling repayments	-2,647	-1,639
Debt borrowings	0	498
Debt repayments	-5	-8
Debt issuance costs	0	-4
Exercise of common stock options and other	14	55
Net cash (used in) provided by financing activities - continuing operations	-207	83
Effect of exchange rate changes on cash	-185	36
Net change in cash and cash equivalents - continuing operations	-206	175
Cash (used in) provided by operating activities - discontinued operations	-23	22
Cash provided by investing activities - discontinued operations	170	0
Net effect of discontinued operations on cash and cash equivalents	147	22
(Decrease) increase in cash and cash equivalents	-59	197
Cash and cash equivalents at beginning of period	3,252	2,593
Cash and cash equivalents at end of period	$3,193	$2,790

Accounting_Policies

Accounting Policies	6 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
ACCOUNTING POLICIES	'
	NOTE A – ACCOUNTING POLICIES
	Basis of Presentation: The accompanying unaudited Condensed Consolidated Financial Statements of CA, Inc. (Company) have been prepared in accordance with U.S. generally accepted accounting principles (GAAP), as defined in Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) 270, for interim financial information and with the instructions to Rule 10-01 of Securities and Exchange Commission Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. For further information, refer to the Company’s Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2014 (2014 Form 10-K).
	In the opinion of management, all adjustments considered necessary for a fair presentation have been included. All such adjustments are of a normal, recurring nature.
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Although these estimates are based on management’s knowledge of current events and actions it may undertake in the future, these estimates may ultimately differ from actual results.
	Operating results for the three and six months ended September 30, 2014 are not necessarily indicative of the results that may be expected for the fiscal year ending March 31, 2015.
	Divestitures: In the second quarter of fiscal year 2015, the Company sold its CA arcserve data protection solution assets (arcserve). In the fourth quarter of fiscal year 2014, the Company identified its CA ERwin Data Modeling solution assets (ERwin) as available for sale. The results of operations associated with these businesses have been presented as discontinued operations in the accompanying Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Cash Flows. The effects of the discontinued operations were immaterial to the Company’s Condensed Consolidated Balance Sheets at September 30, 2014 and March 31, 2014. See Note B, “Divestitures,” for additional information.
	Cash and Cash Equivalents: The Company’s cash and cash equivalents are held in numerous locations throughout the world, with approximately 63% being held by the Company’s foreign subsidiaries outside the United States at September 30, 2014.
	Fair Value Measurements: Fair value is the price that would be received for an asset or the amount paid to transfer a liability in an orderly transaction between market participants. The Company is required to classify certain assets and liabilities based on the following fair value hierarchy:
	•	Level 1: Quoted prices in active markets that are unadjusted and accessible at the measurement date for identical, unrestricted assets or liabilities;
	•	Level 2: Quoted prices for identical assets and liabilities in markets that are not active, or quoted prices for similar assets and liabilities in active markets or financial instruments for which significant inputs are observable, either directly or indirectly; and
	•	Level 3: Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.
	See Note H, “Fair Value Measurements,” for additional information.
	Deferred Revenue (Billed or Collected): The Company accounts for unearned revenue on billed amounts due from customers on a gross basis. Unearned revenue on billed installments (collected or uncollected) is reported as deferred revenue in the liability section of the Company’s Condensed Consolidated Balance Sheets. Deferred revenue (billed or collected) excludes unbilled contractual commitments executed under license and maintenance agreements that will be billed in future periods. See Note F, “Deferred Revenue,” for additional information.
	New Accounting Pronouncements: In May 2014, the FASB issued Accounting Standards Update No. 2014-09 (ASU 2014-09), Revenue from Contracts with Customers (Topic 606), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for annual and interim periods in fiscal years beginning after December 15, 2016. Early application is not permitted. ASU 2014-09 is effective for the Company in its first quarter of fiscal year 2018 using either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. ASU 2014-09 is expected to have a significant impact on the Company’s revenue recognition policies and disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Divestitures

Divestitures	6 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
DIVESTITURES	'
	NOTE B – DIVESTITURES
	In July 2014, the Company sold arcserve for approximately $170 million and recognized a gain on disposal of approximately $19 million, including tax expense of approximately $77 million. The effective tax rate on the disposal was adversely affected by non-deductible goodwill of $109 million. In the fourth quarter of fiscal year 2014, the Company identified ERwin as available for sale. The divestiture of arcserve and the planned divestiture of ERwin result from an effort to rationalize the Company’s product portfolio within the Enterprise Solutions segment.
	The income from discontinued operations relating to both ERwin and the sale of arcserve for the three and six months ended September 30, 2014 and 2013 consisted of the following:
		Three Months Ended
		September 30,
	(in millions)	2014		2013
	Subscription and maintenance	$	10	$	23
	Software fees and other	5		12
	Total revenue	$	15	$	35
	Income from operations of discontinued components, net of tax expense of $2 million and $5 million, respectively	$	2	$	9
	Gain on disposal of discontinued component, net of tax	19		—
	Income from discontinued operations, net of tax	$	21	$	9
		Six Months Ended
		September 30,
	(in millions)	2014		2013
	Subscription and maintenance	$	31	$	45
	Software fees and other	15		23
	Total revenue	$	46	$	68
	Income from operations of discontinued components, net of tax expense of $6 million and $9 million, respectively	$	7	$	14
	Gain on disposal of discontinued component, net of tax	19		—
	Income from discontinued operations, net of tax	$	26	$	14

Severance_and_Exit_Costs

Severance and Exit Costs	6 Months Ended
	Sep. 30, 2014
Restructuring and Related Activities [Abstract]	'
SEVERANCE AND EXIT COSTS	'
	NOTE C – SEVERANCE AND EXIT COSTS
	Fiscal Year 2014 Rebalancing Plan: In fiscal year 2014, the Company’s Board of Directors approved and committed to a rebalancing plan (Fiscal 2014 Plan) to better align its business priorities. This included a termination of approximately 1,900 employees and global facility consolidations. Costs associated with the Fiscal 2014 Plan are presented in “Other expenses, net” in the Company’s Condensed Consolidated Statement of Operations. The total amount incurred to date for severance and facility exit costs under the Fiscal 2014 Plan is approximately $170 million and $22 million, respectively. The Company expects total costs of the Fiscal 2014 Plan to be approximately $195 million (including severance costs of approximately $173 million and global facility exit costs of approximately $22 million). Severance and facility consolidation actions under the Fiscal 2014 Plan were substantially completed by the end of fiscal year 2014.
	Accrued severance and exit costs and changes in the accruals during the six months ended September 30, 2014 and 2013 were as follows:
	(in millions)	Accrued		Expense		Change in			Payments			Accretion			Accrued
		Balance at				Estimate						and Other			Balance at
		31-Mar-14													30-Sep-14
	Severance charges	$	55	$	21	$	(1	)	$	(43	)	$	(2	)	$	30
	Facility exit charges	29		—		—			(5		)	(1		)	23
	Total accrued liabilities	$	84												$	53
	(in millions)	Accrued		Expense		Change in			Payments			Accretion			Accrued
		Balance at				Estimate						and Other			Balance at
		31-Mar-13													30-Sep-13
	Severance charges	$	16	$	111	$	(9	)	$	(69	)	$	3		$	52
	Facility exit charges	23		19		—			(6		)	(3		)	33
	Total accrued liabilities	$	39												$	85
	Balances at September 30, 2014 and 2013 include facility exit accruals of approximately $11 million and $15 million, respectively, for plans and actions prior to fiscal year 2014. Balance at September 30, 2013 included a severance accrual of approximately $7 million for plans and actions prior to the Fiscal 2014 Plan.
	The severance liabilities are included in “Accrued salaries, wages and commissions” in the Condensed Consolidated Balance Sheets. The facility exit liabilities are included in “Accrued expenses and other current liabilities” and “Other noncurrent liabilities” in the Condensed Consolidated Balance Sheets.
	Accretion and other includes accretion of the Company’s lease obligations related to facility exits as well as changes in the assumptions related to future sublease income. These costs are included in “General and administrative” expense in the Condensed Consolidated Statements of Operations.

Trade_Accounts_Receivable

Trade Accounts Receivable	6 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
TRADE ACCOUNTS RECEIVABLE	'
	NOTE D – TRADE ACCOUNTS RECEIVABLE
	Trade accounts receivable, net represents amounts due from the Company’s customers and is presented net of allowances. These balances include revenue recognized in advance of customer billings but do not include unbilled contractual commitments executed under license agreements. The components of “Trade accounts receivable, net” were as follows:
		September 30,			March 31,
		2014			2014
		(in millions)
	Accounts receivable – billed	$	447		$	739
	Accounts receivable – unbilled	69			61
	Other receivables	13			19
	Less: Allowances	(18		)	(19		)
	Trade accounts receivable, net	$	511		$	800

Goodwill_Capitalized_Software_

Goodwill, Capitalized Software and Other Intangible Assets	6 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
GOODWILL, CAPITALIZED SOFTWARE AND OTHER INTANGIBLE ASSETS	'
	NOTE E – GOODWILL, CAPITALIZED SOFTWARE AND OTHER INTANGIBLE ASSETS
	The gross carrying amounts and accumulated amortization for capitalized software and other intangible assets at September 30, 2014 were as follows:
		At September 30, 2014
		Gross		Less: Fully			Remaining		Accumulated			Net
		Amortizable		Amortized			Amortizable		Amortization			Assets
		Assets		Assets			Assets		on Remaining
									Amortizable
									Assets
		(in millions)
	Purchased software products	$	5,698	$	4,853		$	845	$	356		$	489
	Internally developed software products	1,486		794			692		389			303
	Other intangible assets	839		491			348		271			77
	Total capitalized software and other intangible assets	$	8,023	$	6,138		$	1,885	$	1,016		$	869
	The gross carrying amounts and accumulated amortization for capitalized software and other intangible assets at March 31, 2014 were as follows:
		At March 31, 2014
		Gross		Less: Fully			Remaining		Accumulated			Net
		Amortizable		Amortized			Amortizable		Amortization			Assets
		Assets		Assets			Assets		on Remaining
									Amortizable
									Assets
		(in millions)
	Purchased software products	$	5,706	$	4,849		$	857	$	309		$	548
	Internally developed software products	1,561		757			804		397			407
	Other intangible assets	846		489			357		249			108
	Total capitalized software and other intangible assets	$	8,113	$	6,095		$	2,018	$	955		$	1,063
	Based on the capitalized software and other intangible assets recorded through September 30, 2014, the projected annual amortization expense for fiscal year 2015 and the next four fiscal years is expected to be as follows:
		Year Ended March 31,
		2015		2016			2017		2018			2019
		(in millions)
	Purchased software products	$	114	$	110		$	108	$	104		$	62
	Internally developed software products	149		109			79		37			10
	Other intangible assets	58		35			8		3			1
	Total	$	321	$	254		$	195	$	144		$	73
	In the second quarter of fiscal year 2015, the Company recorded an impairment of $13 million relating to capitalized software and other intangible assets within the Enterprise Solutions segment. This adjustment is a result of the Company’s continued effort to rationalize its product portfolio. The impairment was included in “Amortization of capitalized software costs” in the Condensed Consolidated Statement of Operations for the three and six months ended September 30, 2014. Amortization of capitalized software costs was not included in segment expenses (see Note O, “Segment Information,” for additional information).
	The Company evaluates the useful lives and recoverability of capitalized software and other intangible assets when events or changes in circumstances indicate that an impairment may exist. These evaluations require complex assumptions about key factors such as future customer demand, technology trends and the impact of those factors on the technology the Company acquires and develops for its products. Impairments or revisions to useful lives could result from the use of alternative assumptions that reflect reasonably possible outcomes related to future customer demand or technology trends for assets within the Enterprise Solutions segment.
	Goodwill activity by segment for the six months ended September 30, 2014 was as follows:
	(in millions)	Mainframe Solutions		Enterprise Solutions			Services		Total
	Balance at March 31, 2014	$	4,178	$	1,663		$	81	$	5,922
	Divestiture adjustment	—		(109		)	—		(109		)
	Foreign currency translation adjustment	—		(2		)	—		(2		)
	Balance at September 30, 2014	$	4,178	$	1,552		$	81	$	5,811

Deferred_Revenue

Deferred Revenue	6 Months Ended
	Sep. 30, 2014
Deferred Revenue Disclosure [Abstract]	'
DEFERRED REVENUE	'
	NOTE F – DEFERRED REVENUE
	The current and noncurrent components of “Deferred revenue (billed or collected)” at September 30, 2014 and March 31, 2014 were as follows:
		September 30,		March 31,
		2014		2014
		(in millions)
	Current:
	Subscription and maintenance	$	1,804	$	2,237
	Professional services	128		149
	Software fees and other	25		33
	Total deferred revenue (billed or collected) – current	$	1,957	$	2,419
	Noncurrent:
	Subscription and maintenance	$	745	$	845
	Professional services	31		26
	Software fees and other	3		1
	Total deferred revenue (billed or collected) – noncurrent	$	779	$	872
	Total deferred revenue (billed or collected)	$	2,736	$	3,291

Derivatives

Derivatives	6 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
DERIVATIVES	'
	NOTE G – DERIVATIVES
	The Company is exposed to financial market risks arising from changes in interest rates and foreign exchange rates. Changes in interest rates could affect the Company’s monetary assets and liabilities, and foreign exchange rate changes could affect the Company’s foreign currency denominated monetary assets and liabilities and forecasted transactions. The Company enters into derivative contracts with the intent of mitigating a portion of these risks.
	Interest Rate Swaps: The Company has interest rate swaps with a total notional value of $500 million, which swap a total of $500 million of its 6.125% Senior Notes due December 2014 into floating interest rate debt through December 1, 2014. These swaps are designated as fair value hedges.
	At September 30, 2014, the fair value of these derivatives was an asset of approximately $2 million, which is included in “Other current assets” in the Company’s Condensed Consolidated Balance Sheet.
	At March 31, 2014, the fair value of these derivatives was an asset of approximately $8 million, which is included in “Other current assets” in the Company’s Condensed Consolidated Balance Sheet.
	Foreign Currency Contracts: The Company enters into foreign currency option and forward contracts to manage foreign currency risks. The Company has not designated its foreign exchange derivatives as hedges. Accordingly, changes in fair value from these contracts are recorded as “Other expenses, net” in the Company’s Condensed Consolidated Statements of Operations.
	At September 30, 2014, foreign currency contracts outstanding consisted of purchase and sales contracts with a total gross notional value of approximately $961 million and durations of less than six months. The net fair value of these contracts at September 30, 2014 was a net asset of approximately $22 million, of which approximately $25 million is included in “Other current assets” and approximately $3 million is included in “Accrued expenses and other current liabilities” in the Company’s Condensed Consolidated Balance Sheet.
	At March 31, 2014, foreign currency contracts outstanding consisted of purchase and sales contracts with a total gross notional value of approximately $250 million and durations of less than three months. The net fair value of these contracts at March 31, 2014 was a net asset of approximately $1 million, of which approximately $2 million is included in “Other current assets” and approximately $1 million is included in “Accrued expenses and other current liabilities” in the Company’s Condensed Consolidated Balance Sheet.
	A summary of the effect of the interest rate and foreign exchange derivatives on the Company’s Condensed Consolidated Statements of Operations was as follows:
		Amount of Net Gain Recognized in the Condensed Consolidated Statements of Operations
		Three Months Ended						Six Months Ended
		September 30,						September 30,
	(in millions)	2014			2013			2014			2013
	Interest expense, net – interest rate swaps designated as fair value hedges	$	(3	)	$	(3	)	$	(6	)	$	(6	)
	Other expenses, net – foreign currency contracts	$	(17	)	$	(6	)	$	(12	)	$	(15	)
	The Company is subject to collateral security arrangements with most of its major counterparties. These arrangements require the Company or the counterparty to post collateral when the derivative fair values exceed contractually established thresholds. The aggregate fair values of all derivative instruments under these collateralized arrangements were in a net asset position at September 30, 2014 and March 31, 2014. The Company posted no collateral at September 30, 2014 or March 31, 2014. Under these agreements, if the Company’s credit ratings had been downgraded one rating level, the Company would still not have been required to post collateral.

Fair_Value_Measurements

Fair Value Measurements	6 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
FAIR VALUE MEASUREMENTS	'
	NOTE H – FAIR VALUE MEASUREMENTS
	The following table presents the Company’s assets and liabilities that were measured at fair value on a recurring basis at September 30, 2014 and March 31, 2014:
		At September 30, 2014							At March 31, 2014
		Fair Value				Estimated			Fair Value				Estimated
		Measurement Using				Fair			Measurement Using				Fair
		Input Types				Value			Input Types				Value
	(in millions)	Level 1		Level 2		Total			Level 1		Level 2		Total
	Assets:
	Money market funds	$	1,040	$	—	$	1,040	(1)	$	1,277	$	—	$	1,277	(2)
	Foreign exchange derivatives (3)	—		25		25			—		2		2
	Interest rate derivatives (3)	—		2		2			—		8		8
	Total assets	$	1,040	$	27	$	1,067		$	1,277	$	10	$	1,287
	Liabilities:
	Foreign exchange derivatives (3)	$	—	$	3	$	3		$	—	$	1	$	1
	Total liabilities	$	—	$	3	$	3		$	—	$	1	$	1
	-1	At September 30, 2014, the Company had approximately $1,040 million and less than $1 million of investments in money market funds classified as “Cash and cash equivalents” and “Other noncurrent assets, net” for restricted cash amounts, respectively, in its Condensed Consolidated Balance Sheet.
	-2	At March 31, 2014, the Company had approximately $1,277 million and less than $1 million of investments in money market funds classified as “Cash and cash equivalents” and “Other noncurrent assets, net” for restricted cash amounts, respectively, in its Condensed Consolidated Balance Sheet.
	-3	See Note G, “Derivatives” for additional information. Interest rate derivatives fair value excludes accrued interest.
	At September 30, 2014 and March 31, 2014, the Company did not have any assets or liabilities measured at fair value on a recurring basis using significant unobservable inputs (Level 3).
	The carrying values of financial instruments classified as current assets and current liabilities, such as cash and cash equivalents, short-term investments, accounts payable, accrued expenses, and short-term borrowings, approximate fair value due to the short-term maturity of the instruments.
	The following table presents the carrying amounts and estimated fair values of the Company’s other financial instruments that were not measured at fair value on a recurring basis at September 30, 2014 and March 31, 2014:
		At September 30, 2014				At March 31, 2014
	(in millions)	Carrying		Estimated		Carrying			Estimated
		Value		Fair Value		Value			Fair Value
	Liabilities:
	Total debt (1)	$	1,763	$	1,859	$	1,766		$	1,884
	Facility exit reserve (2)	$	23	$	25	$	29		$	33
	-1	Estimated fair value of total debt is based on quoted prices for similar liabilities for which significant inputs are observable except for certain long-term lease obligations, for which fair value approximates carrying value (Level 2).
	-2	Estimated fair value for the facility exit reserve is determined using the Company’s incremental borrowing rate at September 30, 2014 and March 31, 2014. At September 30, 2014 and March 31, 2014, the facility exit reserve included approximately $9 million and $11 million, respectively, in “Accrued expenses and other current liabilities” and approximately $14 million and $18 million, respectively, in “Other noncurrent liabilities” in the Company’s Condensed Consolidated Balance Sheets (Level 3).

Commitments_and_Contingencies

Commitments and Contingencies	6 Months Ended
	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
COMMITMENTS AND CONTINGENCIES	'
	NOTE I – COMMITMENTS AND CONTINGENCIES
	The Company, various subsidiaries, and certain current and former officers have been or, from time to time, may be named as defendants in various lawsuits and claims arising in the normal course of business. The Company may also become involved with contract issues and disputes with customers, including government customers.
	On March 24, 2014, the U.S. Department of Justice (DOJ) filed under seal in the United States District Court for the District of Columbia a complaint against the Company in partial intervention under the qui tam provisions of the civil False Claims Act (FCA). The underlying complaint was filed under seal by an individual plaintiff on August 24, 2009. On May 29, 2014, the case was unsealed. Both the DOJ and the individual plaintiff have filed amended complaints. The current complaints relate to government sales transactions under the Company’s General Services Administration (GSA) schedule contract, entered into in 2002 and extended until present through subsequent amendments. In sum and substance, the current complaints allege that the Company provided inaccurate commercial discounting information to the GSA during contract negotiations and that, as a result, the GSA’s contract discount was lower than it otherwise would have been. In addition, the complaints allege that the Company failed to apply the full negotiated discount in some instances and to pay sufficient rebates pursuant to the contract’s price reduction clause. In addition to FCA claims, the current complaints also assert common law causes of action. The DOJ complaint seeks an unspecified amount of damages, including treble damages and civil penalties. The complaint by the individual plaintiff alleges that the U.S. government has suffered damages in excess of $100 million and seeks an unspecified amount of damages, including treble damages and civil penalties. The Company has filed motions to dismiss the current complaints. Those motions are pending and discussions with the DOJ and GSA are continuing. The Company cannot predict the amount of damages likely to result from this matter. Although the timing and ultimate outcome of this matter cannot be determined, the Company believes that the material aspects of the liability theories set forth in the complaints are unfounded. The Company also believes that it has meritorious defenses and intends to vigorously contest the lawsuit.
	Based on the Company’s experience, management believes that the damages amounts claimed in a case are not a meaningful indicator of the potential liability. Claims, suits, investigations and proceedings are inherently uncertain and it is not possible to predict the ultimate outcome of cases. The Company believes that it has meritorious defenses in connection with its current lawsuits and material claims and disputes, and intends to vigorously contest each of them.
	In the opinion of the Company’s management based upon information currently available to the Company, while the outcome of these lawsuits, claims and disputes is uncertain, the likely results of these lawsuits, claims and disputes are not expected, either individually or in the aggregate, to have a material adverse effect on the Company’s financial position, results of operations or cash flows, although the effect could be material to the Company’s results of operations or cash flows for any interim reporting period. For some of these matters, the Company is unable to estimate a range of reasonably possible loss due to the stage of the matter and/or other particular circumstances of the matter. For others, a range of reasonably possible loss can be estimated. For those matters for which such a range can be estimated, the Company estimates that, in the aggregate, the range of reasonably possible loss is from zero to $30 million. This is in addition to amounts, if any, that have been accrued for those matters.
	The Company is obligated to indemnify its officers and directors under certain circumstances to the fullest extent permitted by Delaware law. As a part of that obligation, the Company may, from time to time, advance certain attorneys’ fees and expenses incurred by officers and directors in various lawsuits and investigations, as permitted under Delaware law.

Stockholders_Equity

Stockholders' Equity	6 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
STOCKHOLDERS' EQUITY	'
	NOTE J – STOCKHOLDERS’ EQUITY
	Stock Repurchases: In May 2014, the Company’s Board of Directors approved a stock repurchase program that authorizes the Company to acquire up to $1 billion of its common stock. During the six months ended September 30, 2014, the Company repurchased approximately 1.7 million shares of its common stock for approximately $50 million. At September 30, 2014, the Company remained authorized to purchase approximately $950 million of its common stock under its current stock repurchase program.
	Accumulated Other Comprehensive Loss: Foreign currency translation losses included in “Accumulated other comprehensive loss” in the Company’s Condensed Consolidated Balance Sheets at September 30, 2014 and March 31, 2014 were approximately $255 million and $171 million, respectively.
	Cash Dividends: The Company’s Board of Directors declared the following dividends during the six months ended September 30, 2014 and 2013:
	Six Months Ended September 30, 2014:
	(in millions, except per share amounts)
	Declaration Date	Dividend Per Share	Record Date	Total Amount	Payment Date
	May 15, 2014	$0.25	May 29, 2014	$111	June 17, 2014
	July 31, 2014	$0.25	August 21, 2014	$111	September 9, 2014
	Six Months Ended September 30, 2013:
	(in millions, except per share amounts)
	Declaration Date	Dividend Per Share	Record Date	Total Amount	Payment Date
	May 9, 2013	$0.25	May 23, 2013	$114	June 11, 2013
	August 1, 2013	$0.25	August 22, 2013	$114	September 10, 2013

Income_From_Continuing_Operati

Income From Continuing Operations Per Common Share	6 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
INCOME FROM CONTINUING OPERATIONS PER COMMON SHARE	'
	NOTE K – INCOME FROM CONTINUING OPERATIONS PER COMMON SHARE
	Basic net income per common share excludes dilution and is calculated by dividing net income allocable to common shares by the weighted average number of common shares outstanding for the period. Diluted net income per common share is calculated by dividing net income allocable to common shares by the weighted average number of common shares, as adjusted for the potential dilutive effect of non-participating share-based awards.
	The following table presents basic and diluted income from continuing operations per common share information for the three and six months ended September 30, 2014 and 2013:
		Three Months Ended						Six Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
		(in millions, except per share amounts)
	Basic income from continuing operations per common share:
	Income from continuing operations	$	235		$	231		$	447		$	561
	Less: Income from continuing operations allocable to participating securities	(2		)	(2		)	(4		)	(6		)
	Income from continuing operations allocable to common shares	$	233		$	229		$	443		$	555
	Weighted average common shares outstanding	440			448			440			449
	Basic income from continuing operations per common share	$	0.53		$	0.51		$	1.01		$	1.24
	Diluted income from continuing operations per common share:
	Income from continuing operations	$	235		$	231		$	447		$	561
	Less: Income from continuing operations allocable to participating securities	(2		)	(2		)	(4		)	(6		)
	Income from continuing operations allocable to common shares	$	233		$	229		$	443		$	555
	Weighted average shares outstanding and common share equivalents:
	Weighted average common shares outstanding	440			448			440			449
	Weighted average effect of share-based payment awards	1			2			1			1
	Denominator in calculation of diluted income per share	441			450			441			450
	Diluted income from continuing operations per common share	$	0.53		$	0.51		$	1		$	1.23
	For the three months ended September 30, 2014 and 2013, respectively, approximately 2 million and 2 million shares of Company common stock underlying restricted stock awards and options to purchase common stock were excluded from the calculation because their effect on income per share was anti-dilutive during the respective periods. Weighted average restricted stock awards of approximately 5 million and 5 million for the three months ended September 30, 2014 and 2013, respectively, were considered participating securities in the calculation of net income allocable to common stockholders.
	For the six months ended September 30, 2014 and 2013, respectively, approximately 2 million and 2 million shares of Company common stock underlying restricted stock awards and options to purchase common stock were excluded from the calculation because their effect on income per share was anti-dilutive during the respective periods. Weighted average restricted stock awards of approximately 4 million and 5 million for the six months ended September 30, 2014 and 2013, respectively, were considered participating securities in the calculation of net income allocable to common stockholders.

Accounting_for_ShareBased_Comp

Accounting for Share-Based Compensation	6 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
ACCOUNTING FOR SHARE-BASED COMPENSATION	'
	NOTE L – ACCOUNTING FOR SHARE-BASED COMPENSATION
	The Company recognized share-based compensation in the following line items in the Condensed Consolidated Statements of Operations for the periods indicated:
		Three Months Ended								Six Months Ended
		September 30,								September 30,
		2014				2013				2014			2013
		(in millions)
	Costs of licensing and maintenance	$	1			$	1			$	2		$	2
	Cost of professional services	1				1				2			2
	Selling and marketing	8				7				15			14
	General and administrative	7				6				13			12
	Product development and enhancements	5				5				10			10
	Share-based compensation expense before tax	$	22			$	20			$	42		$	40
	Income tax benefit	(7		)		(6		)		(13		)	(13		)
	Net share-based compensation expense	$	15			$	14			$	29		$	27
	The following table summarizes information about unrecognized share-based compensation costs at September 30, 2014:
		Unrecognized Share-Based Compensation Costs				Weighted Average Period Expected to be Recognized
		(in millions)				(in years)
	Stock option awards	$	7			2
	Restricted stock units	23				2.2
	Restricted stock awards	81				2.2
	Performance share units	29				2.8
	Total unrecognized share-based compensation costs	$	140			2.3
	There were no capitalized share-based compensation costs for the three and six months ended September 30, 2014 and 2013.
	The value of performance share unit (PSU) awards is determined using the closing price of the Company’s common stock on the last trading day of the quarter until the PSUs are granted. Compensation costs for the PSUs are amortized over the requisite service periods based on the expected level of achievement of the performance targets. At the conclusion of the performance periods for the PSUs, the applicable number of shares of restricted stock awards (RSAs), restricted stock units (RSUs) or unrestricted shares granted may vary based upon the level of achievement of the performance targets and the approval of the Company’s Compensation and Human Resources Committee (which may reduce any award for any reason in its discretion).
	For the six months ended September 30, 2014 and 2013, the Company issued stock options for approximately 0.6 million shares and 1.6 million shares, respectively. The weighted average fair values and assumptions used for the options granted were as follows:
		Six Months Ended
		September 30,
		2014				2013
	Weighted average fair value	$	5.87			$	5.19
	Dividend yield	3.29		%		4.05		%
	Expected volatility factor (1)	29		%		30		%
	Risk-free interest rate (2)	2.1		%		1.5		%
	Expected life (in years) (3)	6				6
	-1	Expected volatility is measured using historical daily price changes of the Company’s stock over the respective expected term of the options and the implied volatility derived from the market prices of the Company’s traded options.
	-2	The risk-free rate for periods within the contractual term of the stock options is based on the U.S. Treasury yield curve in effect at the time of grant.
	-3	The expected life is the number of years the Company estimates that options will be outstanding prior to exercise. The Company’s computation of expected life was determined based on the simplified method (the average of the vesting period and option term).
	The shares under the 1-year PSU awards for the fiscal year 2014 and 2013 incentive plan years under the Company’s long-term incentive plans were granted in the first six months of fiscal years 2015 and 2014, respectively. The awards vest 34% on the date of grant and 33% on the first and second anniversaries of the grant date. The table below summarizes the RSAs and RSUs granted under these PSUs:
					RSAs				RSUs
	Incentive Plans for Fiscal Years		Performance Period		Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
					(in millions)				(in millions)
	2014		1 year		0.7		$29.91		0.1		$28.92
	2013		1 year		0.4		$27.11		0.1		$26.12
	Share-based awards were granted under the Company’s fiscal year 2014 and 2013 sales retention equity programs in the first six months of fiscal years 2015 and 2014, respectively. These awards vest on the third anniversary of the grant date. The table below summarizes the RSAs and RSUs granted under these programs:
					RSAs				RSUs
	Incentive Plans for Fiscal Years		Performance Period		Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
					(in millions)				(in millions)
	2014		1 year		0.2		$28.69		0.1		$25.73
	2013		1 year		0.2		$27.11		0.1		$24.13
	The table below summarizes all of the RSAs and RSUs, including grants made pursuant to the long-term incentive plans discussed above, granted during the three and six months ended September 30, 2014 and 2013:
		Three Months Ended								Six Months Ended
		September 30,								September 30,
		2014				2013				2014			2013
		(shares in millions)
	RSAs:
	Shares	0.1				—			(1)	3			2.7
	Weighted average grant date fair value (2)	$	28.29			$	30.39			$	28.95		$	27.01
	RSUs:
	Shares	—			(1)	—			(1)	0.8			0.8
	Weighted average grant date fair value (3)	$	26.33			$	30.13			$	26.91		$	25.37
	-1	Less than 0.1 million.
	-2	The fair value is based on the quoted market value of the Company’s common stock on the grant date.
	-3	The fair value is based on the quoted market value of the Company’s common stock on the grant date reduced by the present value of dividends expected to be paid on the Company’s common stock prior to vesting of the RSUs, which is calculated using a risk-free interest rate.
	Employee Stock Purchase Plan: The Company maintains the 2012 Employee Stock Purchase Plan (ESPP) for all eligible employees. The ESPP offer period is semi-annual and allows participants to purchase the Company’s common stock at 95% of the closing price of the stock on the last day of the offer period. The ESPP is non-compensatory. For the six-month offer period ended June 30, 2014, the Company issued approximately 0.1 million shares under the ESPP at $27.30 per share. As of September 30, 2014, approximately 29.5 million shares are available for future issuances under the ESPP.

Income_Taxes

Income Taxes	6 Months Ended
	Sep. 30, 2014
Income Tax Disclosure [Abstract]	'
INCOME TAXES	'
	NOTE M – INCOME TAXES
	Income tax expense for the three and six months ended September 30, 2014 was approximately $73 million and $160 million, respectively, compared with income tax expense of approximately $101 million for the three months ended September 30, 2013 and an income tax benefit of approximately $21 million for the six months ended September 30, 2013. For the three and six months ended September 30, 2014, the Company recognized a discrete tax benefit of approximately $19 million resulting from the resolutions of uncertain tax positions upon the completion of the examination of the Company's U.S. federal income tax returns for the tax years ended March 31, 2011 and 2012. For the six months ended September 30, 2013, the Company recognized a net discrete tax benefit of approximately $179 million, resulting primarily from the resolutions of uncertain tax positions upon the completion of the examination of the Company’s U.S. federal income tax returns for the tax years ended March 31, 2005, 2006 and 2007. The examinations of the Company’s U.S. federal income tax returns have been concluded through the fiscal year ended March 31, 2012.
	The Company’s estimated annual effective tax rate, which excludes the impact of discrete items, for the six months ended September 30, 2014 and 2013 was 29.2% and 29.2%, respectively. Changes in tax laws, the outcome of tax audits and any other changes in potential tax liabilities may result in additional tax expense or benefit in fiscal year 2015, which are not considered in the Company’s estimated annual effective tax rate. While the Company does not currently view any such items as individually material to the results of the Company’s consolidated financial position or results of operations, the impact of certain items may yield additional tax expense or benefit in the remaining quarters of fiscal year 2015 and the Company is anticipating a fiscal year 2015 effective tax rate of approximately 30%.

Supplemental_Statement_of_Cash

Supplemental Statement of Cash Flows Information	6 Months Ended
	Sep. 30, 2014
Supplemental Cash Flow Elements [Abstract]	'
SUPPLEMENTAL STATEMENT OF CASH FLOWS INFORMATION	'
	NOTE N – SUPPLEMENTAL STATEMENT OF CASH FLOWS INFORMATION
	For the six months ended September 30, 2014 and 2013, interest payments, net were approximately $40 million and $31 million, respectively, and income taxes paid, net were approximately $181 million and $246 million, respectively. For the six months ended September 30, 2014 and 2013, the excess tax benefits from share-based incentive awards included in financing activities from continuing operations were approximately $3 million and $3 million, respectively.
	Non-cash financing activities for the six months ended September 30, 2014 and 2013 consisted of treasury common shares issued in connection with the following: share-based incentive awards issued under the Company’s equity compensation plans of approximately $42 million (net of approximately $27 million of income taxes withheld) and $46 million (net of approximately $27 million of income taxes withheld), respectively; and discretionary stock contributions to the CA, Inc. Savings Harvest Plan of approximately $26 million and $28 million, respectively. Non-cash financing activities for the six months ended September 30, 2014 and 2013 included approximately $3 million and $2 million, respectively, in treasury common shares issued in connection with the Company’s Employee Stock Purchase Plan.
	The Company uses a notional pooling arrangement with an international bank to help manage global liquidity. Under this pooling arrangement, the Company and its participating subsidiaries may maintain either cash deposit or borrowing positions through local currency accounts with the bank, so long as the aggregate position of the global pool is a notionally calculated net cash deposit. Because it maintains a security interest in the cash deposits and has the right to offset the cash deposits against the borrowings, the bank provides the Company and its participating subsidiaries favorable interest terms on both. The activity under this cash pooling arrangement for the six months ended September 30, 2014 and 2013 was as follows:
		Six Months Ended
		September 30,
		2014			2013
		(in millions)
	Total borrowings outstanding at beginning of period (1)	$	139		$	136
	Borrowings	2,703			1,609
	Repayments	(2,647		)	(1,639		)
	Foreign currency exchange effect	(56		)	20
	Total borrowings outstanding at end of period (1)	$	139		$	126
	-1	Included in “Accrued expenses and other current liabilities” in the Company’s Condensed Consolidated Balance Sheets.

Segment_Information

Segment Information	6 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
SEGMENT INFORMATION	'
	NOTE O – SEGMENT INFORMATION
	The Company’s Mainframe Solutions and Enterprise Solutions segments comprise its software business organized by the nature of the Company’s software offerings and the platform on which the products operate. The Services segment comprises product implementation, consulting, customer education and customer training, including those directly related to the Mainframe Solutions and Enterprise Solutions software that the Company sells to its customers.
	Segment expenses do not include share-based compensation expense; amortization of purchased software; amortization of other intangible assets; certain foreign exchange derivative hedging gains and losses; costs associated with the Company’s Fiscal 2014 Plan; and other miscellaneous costs. The Company considers all costs of internally developed software as segment expense in the period the costs are incurred and as a result, the Company will add back capitalized internal software costs and exclude amortization of internally developed software costs previously capitalized from segment expenses. A measure of segment assets is not currently provided to the Company’s Chief Executive Officer and has therefore not been disclosed.
	The Company’s segment information for the three and six months ended September 30, 2014 and 2013 was as follows:
	Three Months Ended September 30, 2014	Mainframe			Enterprise			Services			Total
	(dollars in millions)	Solutions			Solutions
	Revenue	$	610		$	378		$	91		$	1,079
	Expenses	234			327			89			650
	Segment profit	$	376		$	51		$	2		$	429
	Segment operating margin	62		%	13		%	2		%	40		%
	Depreciation	$	11		$	7		$	—		$	18
	Reconciliation of segment profit to income from continuing operations before income taxes for the three months ended September 30, 2014:
	(in millions)
	Segment profit	$	429
	Less:
	Purchased software amortization	31
	Other intangibles amortization	16
	Software development costs capitalized	—
	Internally developed software products amortization	44
	Share-based compensation expense	22
	Other expenses, net (1)	(4		)
	Interest expense, net	12
	Income from continuing operations before income taxes	$	308
	-1	Other expenses, net consists of approximately $12 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
	Six Months Ended September 30, 2014	Mainframe			Enterprise			Services			Total
	(dollars in millions)	Solutions			Solutions
	Revenue	$	1,224		$	746		$	178		$	2,148
	Expenses	469			652			171			1,292
	Segment profit	$	755		$	94		$	7		$	856
	Segment operating margin	62		%	13		%	4		%	40		%
	Depreciation	$	23		$	14		$	—		$	37
	Reconciliation of segment profit to income from continuing operations before income taxes for the six months ended September 30, 2014:
	(in millions)
	Segment profit	$	856
	Less:
	Purchased software amortization	59
	Other intangibles amortization	31
	Software development costs capitalized	—
	Internally developed software products amortization	83
	Share-based compensation expense	42
	Other expenses, net (1)	8
	Interest expense, net	26
	Income from continuing operations before income taxes	$	607
	-1	Other expenses, net consists of approximately $21 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
	Three Months Ended September 30, 2013	Mainframe			Enterprise			Services			Total
	(dollars in millions)	Solutions			Solutions
	Revenue	$	624		$	384		$	97		$	1,105
	Expenses	232			337			88			657
	Segment profit	$	392		$	47		$	9		$	448
	Segment operating margin	63		%	12		%	9		%	41		%
	Depreciation	$	13		$	9		$	—		$	22
	Reconciliation of segment profit to income from continuing operations before income taxes for the three months ended September 30, 2013:
	(in millions)
	Segment profit	$	448
	Less:
	Purchased software amortization	31
	Other intangibles amortization	15
	Software development costs capitalized	(8		)
	Internally developed software products amortization	38
	Share-based compensation expense	20
	Other expenses, net (1)	7
	Interest expense, net	13
	Income from continuing operations before income taxes	$	332
-1	Other expenses, net consists of approximately $2 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
Six Months Ended September 30, 2013	Mainframe			Enterprise			Services			Total
(dollars in millions)	Solutions			Solutions
Revenue	$	1,243		$	762		$	195		$	2,200
Expenses	475			688			178			1,341
Segment profit	$	768		$	74		$	17		$	859
Segment operating margin	62		%	10		%	9		%	39		%
Depreciation	$	27		$	17		$	—		$	44
Reconciliation of segment profit to income from continuing operations before income taxes for the six months ended September 30, 2013:
(in millions)
Segment profit	$	859
Less:
Purchased software amortization	59
Other intangibles amortization	29
Software development costs capitalized	(31		)
Internally developed software products amortization	76
Share-based compensation expense	40
Other expenses, net (1)	122
Interest expense, net	24
Income from continuing operations before income taxes	$	540
-1	Other expenses, net consists of approximately $119 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
The table below summarizes the Company’s revenue from the United States and from international (i.e., non-U.S.) locations:
	Three Months Ended						Six Months Ended
	September 30,						September 30,
	2014			2013			2014			2013
	(in millions)
United States	$	656		$	671		$	1,299		$	1,328
EMEA (1)	259			267			518			531
Other	164			167			331			341
Total revenue	$	1,079		$	1,105		$	2,148		$	2,200
-1	Consists of Europe, the Middle East and Africa.

Accounting_Policies_Policies

Accounting Policies (Policies)	6 Months Ended
	Sep. 30, 2014
Accounting Policies [Abstract]	'
Basis of Presentation	'
	Basis of Presentation: The accompanying unaudited Condensed Consolidated Financial Statements of CA, Inc. (Company) have been prepared in accordance with U.S. generally accepted accounting principles (GAAP), as defined in Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) 270, for interim financial information and with the instructions to Rule 10-01 of Securities and Exchange Commission Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. For further information, refer to the Company’s Consolidated Financial Statements and Notes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended March 31, 2014 (2014 Form 10-K).
	In the opinion of management, all adjustments considered necessary for a fair presentation have been included. All such adjustments are of a normal, recurring nature.
	The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the financial statements and accompanying notes. Although these estimates are based on management’s knowledge of current events and actions it may undertake in the future, these estimates may ultimately differ from actual results.
	Operating results for the three and six months ended September 30, 2014 are not necessarily indicative of the results that may be expected for the fiscal year ending March 31, 2015.
Divestitures	'
	Divestitures: In the second quarter of fiscal year 2015, the Company sold its CA arcserve data protection solution assets (arcserve). In the fourth quarter of fiscal year 2014, the Company identified its CA ERwin Data Modeling solution assets (ERwin) as available for sale. The results of operations associated with these businesses have been presented as discontinued operations in the accompanying Condensed Consolidated Statements of Operations and Condensed Consolidated Statements of Cash Flows. The effects of the discontinued operations were immaterial to the Company’s Condensed Consolidated Balance Sheets at September 30, 2014 and March 31, 2014. See Note B, “Divestitures,” for additional information.
Cash and Cash Equivalents	'
	Cash and Cash Equivalents: The Company’s cash and cash equivalents are held in numerous locations throughout the world, with approximately 63% being held by the Company’s foreign subsidiaries outside the United States at September 30, 2014.
Fair Value Measurements	'
	Fair Value Measurements: Fair value is the price that would be received for an asset or the amount paid to transfer a liability in an orderly transaction between market participants. The Company is required to classify certain assets and liabilities based on the following fair value hierarchy:
	•	Level 1: Quoted prices in active markets that are unadjusted and accessible at the measurement date for identical, unrestricted assets or liabilities;
	•	Level 2: Quoted prices for identical assets and liabilities in markets that are not active, or quoted prices for similar assets and liabilities in active markets or financial instruments for which significant inputs are observable, either directly or indirectly; and
	•	Level 3: Prices or valuations that require inputs that are both significant to the fair value measurement and unobservable.
	See Note H, “Fair Value Measurements,” for additional information.
Deferred Revenue (Billed or Collected)	'
	Deferred Revenue (Billed or Collected): The Company accounts for unearned revenue on billed amounts due from customers on a gross basis. Unearned revenue on billed installments (collected or uncollected) is reported as deferred revenue in the liability section of the Company’s Condensed Consolidated Balance Sheets. Deferred revenue (billed or collected) excludes unbilled contractual commitments executed under license and maintenance agreements that will be billed in future periods. See Note F, “Deferred Revenue,” for additional information.
New Accounting Pronouncements	'
	New Accounting Pronouncements: In May 2014, the FASB issued Accounting Standards Update No. 2014-09 (ASU 2014-09), Revenue from Contracts with Customers (Topic 606), which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most existing revenue recognition guidance in U.S. GAAP when it becomes effective. The new standard is effective for annual and interim periods in fiscal years beginning after December 15, 2016. Early application is not permitted. ASU 2014-09 is effective for the Company in its first quarter of fiscal year 2018 using either the retrospective or cumulative effect transition method. The Company is evaluating the effect that ASU 2014-09 will have on its consolidated financial statements and related disclosures. ASU 2014-09 is expected to have a significant impact on the Company’s revenue recognition policies and disclosures. The Company has not yet selected a transition method nor has it determined the effect of the standard on its ongoing financial reporting.

Divestitures_Tables

Divestitures (Tables)	6 Months Ended
	Sep. 30, 2014
Discontinued Operations and Disposal Groups [Abstract]	'
Income from discontinued operations	'
	The income from discontinued operations relating to both ERwin and the sale of arcserve for the three and six months ended September 30, 2014 and 2013 consisted of the following:
		Three Months Ended
		September 30,
	(in millions)	2014		2013
	Subscription and maintenance	$	10	$	23
	Software fees and other	5		12
	Total revenue	$	15	$	35
	Income from operations of discontinued components, net of tax expense of $2 million and $5 million, respectively	$	2	$	9
	Gain on disposal of discontinued component, net of tax	19		—
	Income from discontinued operations, net of tax	$	21	$	9
		Six Months Ended
		September 30,
	(in millions)	2014		2013
	Subscription and maintenance	$	31	$	45
	Software fees and other	15		23
	Total revenue	$	46	$	68
	Income from operations of discontinued components, net of tax expense of $6 million and $9 million, respectively	$	7	$	14
	Gain on disposal of discontinued component, net of tax	19		—
	Income from discontinued operations, net of tax	$	26	$	14

Severance_and_Exit_Costs_Table

Severance and Exit Costs (Tables)	6 Months Ended
	Sep. 30, 2014
Restructuring and Related Activities [Abstract]	'
Accrued severance and exit costs activity	'
	Accrued severance and exit costs and changes in the accruals during the six months ended September 30, 2014 and 2013 were as follows:
	(in millions)	Accrued		Expense		Change in			Payments			Accretion			Accrued
		Balance at				Estimate						and Other			Balance at
		31-Mar-14													30-Sep-14
	Severance charges	$	55	$	21	$	(1	)	$	(43	)	$	(2	)	$	30
	Facility exit charges	29		—		—			(5		)	(1		)	23
	Total accrued liabilities	$	84												$	53
	(in millions)	Accrued		Expense		Change in			Payments			Accretion			Accrued
		Balance at				Estimate						and Other			Balance at
		31-Mar-13													30-Sep-13
	Severance charges	$	16	$	111	$	(9	)	$	(69	)	$	3		$	52
	Facility exit charges	23		19		—			(6		)	(3		)	33
	Total accrued liabilities	$	39												$	85

Trade_Accounts_Receivable_Tabl

Trade Accounts Receivable (Tables)	6 Months Ended
	Sep. 30, 2014
Receivables [Abstract]	'
Components of trade accounts receivable, net	'
	The components of “Trade accounts receivable, net” were as follows:
		September 30,			March 31,
		2014			2014
		(in millions)
	Accounts receivable – billed	$	447		$	739
	Accounts receivable – unbilled	69			61
	Other receivables	13			19
	Less: Allowances	(18		)	(19		)
	Trade accounts receivable, net	$	511		$	800

Goodwill_Capitalized_Software_1

Goodwill, Capitalized Software and Other Intangible Assets (Tables)	6 Months Ended
	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'
Capitalized software and other intangible assets	'
	The gross carrying amounts and accumulated amortization for capitalized software and other intangible assets at September 30, 2014 were as follows:
		At September 30, 2014
		Gross		Less: Fully			Remaining		Accumulated			Net
		Amortizable		Amortized			Amortizable		Amortization			Assets
		Assets		Assets			Assets		on Remaining
									Amortizable
									Assets
		(in millions)
	Purchased software products	$	5,698	$	4,853		$	845	$	356		$	489
	Internally developed software products	1,486		794			692		389			303
	Other intangible assets	839		491			348		271			77
	Total capitalized software and other intangible assets	$	8,023	$	6,138		$	1,885	$	1,016		$	869
	The gross carrying amounts and accumulated amortization for capitalized software and other intangible assets at March 31, 2014 were as follows:
		At March 31, 2014
		Gross		Less: Fully			Remaining		Accumulated			Net
		Amortizable		Amortized			Amortizable		Amortization			Assets
		Assets		Assets			Assets		on Remaining
									Amortizable
									Assets
		(in millions)
	Purchased software products	$	5,706	$	4,849		$	857	$	309		$	548
	Internally developed software products	1,561		757			804		397			407
	Other intangible assets	846		489			357		249			108
	Total capitalized software and other intangible assets	$	8,113	$	6,095		$	2,018	$	955		$	1,063
Projected annual amortization expense	'
	Based on the capitalized software and other intangible assets recorded through September 30, 2014, the projected annual amortization expense for fiscal year 2015 and the next four fiscal years is expected to be as follows:
		Year Ended March 31,
		2015		2016			2017		2018			2019
		(in millions)
	Purchased software products	$	114	$	110		$	108	$	104		$	62
	Internally developed software products	149		109			79		37			10
	Other intangible assets	58		35			8		3			1
	Total	$	321	$	254		$	195	$	144		$	73
Goodwill activity by segment	'
	Goodwill activity by segment for the six months ended September 30, 2014 was as follows:
	(in millions)	Mainframe Solutions		Enterprise Solutions			Services		Total
	Balance at March 31, 2014	$	4,178	$	1,663		$	81	$	5,922
	Divestiture adjustment	—		(109		)	—		(109		)
	Foreign currency translation adjustment	—		(2		)	—		(2		)
	Balance at September 30, 2014	$	4,178	$	1,552		$	81	$	5,811

Deferred_Revenue_Tables

Deferred Revenue (Tables)	6 Months Ended
	Sep. 30, 2014
Deferred Revenue Disclosure [Abstract]	'
Components of deferred revenue (billed or collected)	'
	The current and noncurrent components of “Deferred revenue (billed or collected)” at September 30, 2014 and March 31, 2014 were as follows:
		September 30,		March 31,
		2014		2014
		(in millions)
	Current:
	Subscription and maintenance	$	1,804	$	2,237
	Professional services	128		149
	Software fees and other	25		33
	Total deferred revenue (billed or collected) – current	$	1,957	$	2,419
	Noncurrent:
	Subscription and maintenance	$	745	$	845
	Professional services	31		26
	Software fees and other	3		1
	Total deferred revenue (billed or collected) – noncurrent	$	779	$	872
	Total deferred revenue (billed or collected)	$	2,736	$	3,291

Derivatives_Tables

Derivatives (Tables)	6 Months Ended
	Sep. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]	'
Effect of interest rate and foreign exchange derivatives	'
	A summary of the effect of the interest rate and foreign exchange derivatives on the Company’s Condensed Consolidated Statements of Operations was as follows:
		Amount of Net Gain Recognized in the Condensed Consolidated Statements of Operations
		Three Months Ended						Six Months Ended
		September 30,						September 30,
	(in millions)	2014			2013			2014			2013
	Interest expense, net – interest rate swaps designated as fair value hedges	$	(3	)	$	(3	)	$	(6	)	$	(6	)
	Other expenses, net – foreign currency contracts	$	(17	)	$	(6	)	$	(12	)	$	(15	)

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	6 Months Ended
	Sep. 30, 2014
Fair Value Disclosures [Abstract]	'
Assets and liabilities measured at fair value on a recurring basis	'
	The following table presents the Company’s assets and liabilities that were measured at fair value on a recurring basis at September 30, 2014 and March 31, 2014:
		At September 30, 2014							At March 31, 2014
		Fair Value				Estimated			Fair Value				Estimated
		Measurement Using				Fair			Measurement Using				Fair
		Input Types				Value			Input Types				Value
	(in millions)	Level 1		Level 2		Total			Level 1		Level 2		Total
	Assets:
	Money market funds	$	1,040	$	—	$	1,040	(1)	$	1,277	$	—	$	1,277	(2)
	Foreign exchange derivatives (3)	—		25		25			—		2		2
	Interest rate derivatives (3)	—		2		2			—		8		8
	Total assets	$	1,040	$	27	$	1,067		$	1,277	$	10	$	1,287
	Liabilities:
	Foreign exchange derivatives (3)	$	—	$	3	$	3		$	—	$	1	$	1
	Total liabilities	$	—	$	3	$	3		$	—	$	1	$	1
	-1	At September 30, 2014, the Company had approximately $1,040 million and less than $1 million of investments in money market funds classified as “Cash and cash equivalents” and “Other noncurrent assets, net” for restricted cash amounts, respectively, in its Condensed Consolidated Balance Sheet.
	-2	At March 31, 2014, the Company had approximately $1,277 million and less than $1 million of investments in money market funds classified as “Cash and cash equivalents” and “Other noncurrent assets, net” for restricted cash amounts, respectively, in its Condensed Consolidated Balance Sheet.
	-3	See Note G, “Derivatives” for additional information. Interest rate derivatives fair value excludes accrued interest.
Carrying amounts and estimated fair values of other financial instruments not measured at fair value on a recurring basis	'
	The following table presents the carrying amounts and estimated fair values of the Company’s other financial instruments that were not measured at fair value on a recurring basis at September 30, 2014 and March 31, 2014:
		At September 30, 2014				At March 31, 2014
	(in millions)	Carrying		Estimated		Carrying			Estimated
		Value		Fair Value		Value			Fair Value
	Liabilities:
	Total debt (1)	$	1,763	$	1,859	$	1,766		$	1,884
	Facility exit reserve (2)	$	23	$	25	$	29		$	33
	-1	Estimated fair value of total debt is based on quoted prices for similar liabilities for which significant inputs are observable except for certain long-term lease obligations, for which fair value approximates carrying value (Level 2).
	-2	Estimated fair value for the facility exit reserve is determined using the Company’s incremental borrowing rate at September 30, 2014 and March 31, 2014. At September 30, 2014 and March 31, 2014, the facility exit reserve included approximately $9 million and $11 million, respectively, in “Accrued expenses and other current liabilities” and approximately $14 million and $18 million, respectively, in “Other noncurrent liabilities” in the Company’s Condensed Consolidated Balance Sheets (Level 3).

Stockholders_Equity_Tables

Stockholders' Equity (Tables)	6 Months Ended
	Sep. 30, 2014
Equity [Abstract]	'
Cash dividends	'
	Cash Dividends: The Company’s Board of Directors declared the following dividends during the six months ended September 30, 2014 and 2013:
	Six Months Ended September 30, 2014:
	(in millions, except per share amounts)
	Declaration Date	Dividend Per Share	Record Date	Total Amount	Payment Date
	May 15, 2014	$0.25	May 29, 2014	$111	June 17, 2014
	July 31, 2014	$0.25	August 21, 2014	$111	September 9, 2014
	Six Months Ended September 30, 2013:
	(in millions, except per share amounts)
	Declaration Date	Dividend Per Share	Record Date	Total Amount	Payment Date
	May 9, 2013	$0.25	May 23, 2013	$114	June 11, 2013
	August 1, 2013	$0.25	August 22, 2013	$114	September 10, 2013

Income_From_Continuing_Operati1

Income From Continuing Operations Per Common Share (Tables)	6 Months Ended
	Sep. 30, 2014
Earnings Per Share [Abstract]	'
Reconciliation of basic and diluted income from continuing operations per common share	'
	The following table presents basic and diluted income from continuing operations per common share information for the three and six months ended September 30, 2014 and 2013:
		Three Months Ended						Six Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
		(in millions, except per share amounts)
	Basic income from continuing operations per common share:
	Income from continuing operations	$	235		$	231		$	447		$	561
	Less: Income from continuing operations allocable to participating securities	(2		)	(2		)	(4		)	(6		)
	Income from continuing operations allocable to common shares	$	233		$	229		$	443		$	555
	Weighted average common shares outstanding	440			448			440			449
	Basic income from continuing operations per common share	$	0.53		$	0.51		$	1.01		$	1.24
	Diluted income from continuing operations per common share:
	Income from continuing operations	$	235		$	231		$	447		$	561
	Less: Income from continuing operations allocable to participating securities	(2		)	(2		)	(4		)	(6		)
	Income from continuing operations allocable to common shares	$	233		$	229		$	443		$	555
	Weighted average shares outstanding and common share equivalents:
	Weighted average common shares outstanding	440			448			440			449
	Weighted average effect of share-based payment awards	1			2			1			1
	Denominator in calculation of diluted income per share	441			450			441			450
	Diluted income from continuing operations per common share	$	0.53		$	0.51		$	1		$	1.23

Accounting_for_ShareBased_Comp1

Accounting for Share-Based Compensation (Tables)	6 Months Ended
	Sep. 30, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'
Recognized share-based compensation	'
	The Company recognized share-based compensation in the following line items in the Condensed Consolidated Statements of Operations for the periods indicated:
		Three Months Ended								Six Months Ended
		September 30,								September 30,
		2014				2013				2014			2013
		(in millions)
	Costs of licensing and maintenance	$	1			$	1			$	2		$	2
	Cost of professional services	1				1				2			2
	Selling and marketing	8				7				15			14
	General and administrative	7				6				13			12
	Product development and enhancements	5				5				10			10
	Share-based compensation expense before tax	$	22			$	20			$	42		$	40
	Income tax benefit	(7		)		(6		)		(13		)	(13		)
	Net share-based compensation expense	$	15			$	14			$	29		$	27
Unrecognized share-based compensation costs	'
	The following table summarizes information about unrecognized share-based compensation costs at September 30, 2014:
		Unrecognized Share-Based Compensation Costs				Weighted Average Period Expected to be Recognized
		(in millions)				(in years)
	Stock option awards	$	7			2
	Restricted stock units	23				2.2
	Restricted stock awards	81				2.2
	Performance share units	29				2.8
	Total unrecognized share-based compensation costs	$	140			2.3
Weighted average fair values and assumptions used for options granted	'
	The weighted average fair values and assumptions used for the options granted were as follows:
		Six Months Ended
		September 30,
		2014				2013
	Weighted average fair value	$	5.87			$	5.19
	Dividend yield	3.29		%		4.05		%
	Expected volatility factor (1)	29		%		30		%
	Risk-free interest rate (2)	2.1		%		1.5		%
	Expected life (in years) (3)	6				6
	-1	Expected volatility is measured using historical daily price changes of the Company’s stock over the respective expected term of the options and the implied volatility derived from the market prices of the Company’s traded options.
	-2	The risk-free rate for periods within the contractual term of the stock options is based on the U.S. Treasury yield curve in effect at the time of grant.
	-3	The expected life is the number of years the Company estimates that options will be outstanding prior to exercise. The Company’s computation of expected life was determined based on the simplified method (the average of the vesting period and option term).
Summary of RSAs and RSUs granted under 1-year PSUs for fiscal year 2014 and 2013 Incentive Plans	'
	The table below summarizes the RSAs and RSUs granted under these PSUs:
					RSAs				RSUs
	Incentive Plans for Fiscal Years		Performance Period		Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
					(in millions)				(in millions)
	2014		1 year		0.7		$29.91		0.1		$28.92
	2013		1 year		0.4		$27.11		0.1		$26.12
Summary of RSAs and RSUs granted under 1-year PSUs for fiscal year 2014 and 2013 Sales Retention Equity Programs	'
	The table below summarizes the RSAs and RSUs granted under these programs:
					RSAs				RSUs
	Incentive Plans for Fiscal Years		Performance Period		Shares		Weighted Average Grant Date Fair Value		Shares		Weighted Average Grant Date Fair Value
					(in millions)				(in millions)
	2014		1 year		0.2		$28.69		0.1		$25.73
	2013		1 year		0.2		$27.11		0.1		$24.13
Summary of all RSAs and RSUs granted	'
	The table below summarizes all of the RSAs and RSUs, including grants made pursuant to the long-term incentive plans discussed above, granted during the three and six months ended September 30, 2014 and 2013:
		Three Months Ended								Six Months Ended
		September 30,								September 30,
		2014				2013				2014			2013
		(shares in millions)
	RSAs:
	Shares	0.1				—			(1)	3			2.7
	Weighted average grant date fair value (2)	$	28.29			$	30.39			$	28.95		$	27.01
	RSUs:
	Shares	—			(1)	—			(1)	0.8			0.8
	Weighted average grant date fair value (3)	$	26.33			$	30.13			$	26.91		$	25.37
	-1	Less than 0.1 million.
	-2	The fair value is based on the quoted market value of the Company’s common stock on the grant date.
	-3	The fair value is based on the quoted market value of the Company’s common stock on the grant date reduced by the present value of dividends expected to be paid on the Company’s common stock prior to vesting of the RSUs, which is calculated using a risk-free interest rate.

Supplemental_Statement_of_Cash1

Supplemental Statement of Cash Flows Information (Tables)	6 Months Ended
	Sep. 30, 2014
Supplemental Cash Flow Elements [Abstract]	'
Activity under cash pooling arrangement	'
	The activity under this cash pooling arrangement for the six months ended September 30, 2014 and 2013 was as follows:
		Six Months Ended
		September 30,
		2014			2013
		(in millions)
	Total borrowings outstanding at beginning of period (1)	$	139		$	136
	Borrowings	2,703			1,609
	Repayments	(2,647		)	(1,639		)
	Foreign currency exchange effect	(56		)	20
	Total borrowings outstanding at end of period (1)	$	139		$	126
	-1	Included in “Accrued expenses and other current liabilities” in the Company’s Condensed Consolidated Balance Sheets.

Segment_Information_Tables

Segment Information (Tables)	6 Months Ended
	Sep. 30, 2014
Segment Reporting [Abstract]	'
Segment information	'
	Three Months Ended September 30, 2014	Mainframe			Enterprise			Services			Total
	(dollars in millions)	Solutions			Solutions
	Revenue	$	610		$	378		$	91		$	1,079
	Expenses	234			327			89			650
	Segment profit	$	376		$	51		$	2		$	429
	Segment operating margin	62		%	13		%	2		%	40		%
	Depreciation	$	11		$	7		$	—		$	18
	Six Months Ended September 30, 2014	Mainframe			Enterprise			Services			Total
	(dollars in millions)	Solutions			Solutions
	Revenue	$	1,224		$	746		$	178		$	2,148
	Expenses	469			652			171			1,292
	Segment profit	$	755		$	94		$	7		$	856
	Segment operating margin	62		%	13		%	4		%	40		%
	Depreciation	$	23		$	14		$	—		$	37
	Six Months Ended September 30, 2013	Mainframe			Enterprise			Services			Total
	(dollars in millions)	Solutions			Solutions
	Revenue	$	1,243		$	762		$	195		$	2,200
	Expenses	475			688			178			1,341
	Segment profit	$	768		$	74		$	17		$	859
	Segment operating margin	62		%	10		%	9		%	39		%
	Depreciation	$	27		$	17		$	—		$	44
	Three Months Ended September 30, 2013	Mainframe			Enterprise			Services			Total
	(dollars in millions)	Solutions			Solutions
	Revenue	$	624		$	384		$	97		$	1,105
	Expenses	232			337			88			657
	Segment profit	$	392		$	47		$	9		$	448
	Segment operating margin	63		%	12		%	9		%	41		%
	Depreciation	$	13		$	9		$	—		$	22
Reconciliation of segment profit to income from continuing operations before income taxes	'
	Reconciliation of segment profit to income from continuing operations before income taxes for the six months ended September 30, 2014:
	(in millions)
	Segment profit	$	856
	Less:
	Purchased software amortization	59
	Other intangibles amortization	31
	Software development costs capitalized	—
	Internally developed software products amortization	83
	Share-based compensation expense	42
	Other expenses, net (1)	8
	Interest expense, net	26
	Income from continuing operations before income taxes	$	607
	-1	Other expenses, net consists of approximately $21 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
	Reconciliation of segment profit to income from continuing operations before income taxes for the three months ended September 30, 2014:
	(in millions)
	Segment profit	$	429
	Less:
	Purchased software amortization	31
	Other intangibles amortization	16
	Software development costs capitalized	—
	Internally developed software products amortization	44
	Share-based compensation expense	22
	Other expenses, net (1)	(4		)
	Interest expense, net	12
	Income from continuing operations before income taxes	$	308
	-1	Other expenses, net consists of approximately $12 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
	Reconciliation of segment profit to income from continuing operations before income taxes for the three months ended September 30, 2013:
	(in millions)
	Segment profit	$	448
	Less:
	Purchased software amortization	31
	Other intangibles amortization	15
	Software development costs capitalized	(8		)
	Internally developed software products amortization	38
	Share-based compensation expense	20
	Other expenses, net (1)	7
	Interest expense, net	13
	Income from continuing operations before income taxes	$	332
	-1	Other expenses, net consists of approximately $2 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
	Reconciliation of segment profit to income from continuing operations before income taxes for the six months ended September 30, 2013:
	(in millions)
	Segment profit	$	859
	Less:
	Purchased software amortization	59
	Other intangibles amortization	29
	Software development costs capitalized	(31		)
	Internally developed software products amortization	76
	Share-based compensation expense	40
	Other expenses, net (1)	122
	Interest expense, net	24
	Income from continuing operations before income taxes	$	540
	-1	Other expenses, net consists of approximately $119 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
Revenue from the United States and international locations	'
	The table below summarizes the Company’s revenue from the United States and from international (i.e., non-U.S.) locations:
		Three Months Ended						Six Months Ended
		September 30,						September 30,
		2014			2013			2014			2013
		(in millions)
	United States	$	656		$	671		$	1,299		$	1,328
	EMEA (1)	259			267			518			531
	Other	164			167			331			341
	Total revenue	$	1,079		$	1,105		$	2,148		$	2,200
	-1	Consists of Europe, the Middle East and Africa.

Accounting_Policies_Details

Accounting Policies (Details)	Sep. 30, 2014
Accounting Policies [Abstract]	'
Percentage of cash and cash equivalents held by the Company's foreign subsidiaries outside the United States	63.00%

Divestitures_1_Details

Divestitures 1 (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income from discontinued operations	'	'	'	'
Income from discontinued operations, net of tax	$21	$9	$26	$14
Discontinued Components [Member]	'	'	'	'
Income from discontinued operations	'	'	'	'
Total revenue	15	35	46	68
Income from operations of discontinued components, net of tax expense	2	9	7	14
Gain on disposal of discontinued component, net of tax	19	0	19	0
Income from discontinued operations, net of tax	21	9	26	14
Tax expense on income from operations of discontinued components	2	5	6	9
Discontinued Components [Member] | Subscription and Maintenance [Member]	'	'	'	'
Income from discontinued operations	'	'	'	'
Total revenue	10	23	31	45
Discontinued Components [Member] | Software Fees and Other [Member]	'	'	'	'
Income from discontinued operations	'	'	'	'
Total revenue	$5	$12	$15	$23

Divestitures_2_Details

Divestitures 2 (Details) (USD $)	6 Months Ended	1 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Jul. 31, 2014
		Arcserve [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]	'	'
Proceeds from sale of discontinued component	'	$170
Gain on disposal of discontinued component, net of tax	'	19
Tax expense related to gain on disposal of discontinued component	'	77
Goodwill written off related to sale of discontinued component	$109	$109

Severance_and_Exit_Costs_1_Det

Severance and Exit Costs 1 (Details) (USD $)	Sep. 30, 2014	Mar. 31, 2014	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
In Millions, unless otherwise specified					Severance Charges [Member]	Severance Charges [Member]	Facility Exit Charges [Member]	Facility Exit Charges [Member]
Accrued severance and exit costs activity	'	'	'	'	'	'	'	'
Accrued beginning balance	$53	$84	$85	$39	$55	$16	$29	$23
Expense	'	'	'	'	21	111	0	19
Change in estimate	'	'	'	'	-1	-9	0	0
Payments	'	'	'	'	-43	-69	-5	-6
Accretion and other	'	'	'	'	-2	3	-1	-3
Accrued ending balance	$53	$84	$85	$39	$30	$52	$23	$33

Severance_and_Exit_Costs_2_Det

Severance and Exit Costs 2 (Details) (USD $)

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2014

Mar. 31, 2014

Sep. 30, 2013

Mar. 31, 2013

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2014

Sep. 30, 2013

Sep. 30, 2014

Sep. 30, 2013

In Millions, unless otherwise specified

Severance [Member]

Severance [Member]

Severance [Member]

Severance [Member]

Facility Exit [Member]

Facility Exit [Member]

Facility Exit [Member]

Facility Exit [Member]

Fiscal 2014 Plan [Member]

Fiscal 2014 Plan [Member]

Fiscal 2014 Plan [Member]

Plans and Actions Prior to Fiscal 2014 Plan [Member]

Plans and Actions Prior to Fiscal 2014 Plan [Member]

Plans and Actions Prior to Fiscal 2014 Plan [Member]

Employee

Severance [Member]

Facility Exit [Member]

Severance [Member]

Facility Exit [Member]

Facility Exit [Member]

Restructuring Cost and Reserve [Line Items]

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

'

Workforce rebalancing (number of employees)

'

'

'

'

'

'

'

'

'

'

'

'

1,900

'

'

'

'

'

Cost incurred to date

'

'

'

'

'

'

'

'

'

'

'

'

'

$170

$22

'

'

'

Expected cost

'

'

'

'

'

'

'

'

'

'

'

'

195

173

22

'

'

'

Accrued balance

$53

$84

$85

$39

$30

$55

$52

$16

$23

$29

$33

$23

'

'

'

$7

$11

$15

Trade_Accounts_Receivable_Deta

Trade Accounts Receivable (Details) (USD $)	Sep. 30, 2014	Mar. 31, 2014
In Millions, unless otherwise specified
Components of trade accounts receivable, net	'	'
Accounts receivable - billed	$447	$739
Accounts receivable - unbilled	69	61
Other receivables	13	19
Less: Allowances	-18	-19
Trade accounts receivable, net	$511	$800

Goodwill_Capitalized_Software_2

Goodwill, Capitalized Software and Other Intangible Assets 1 (Details) (USD $)	Sep. 30, 2014	Mar. 31, 2014
In Millions, unless otherwise specified
Capitalized software and other intangible assets	'	'
Gross amortizable assets	$8,023	$8,113
Less: Fully amortized assets	6,138	6,095
Remaining amortizable assets	1,885	2,018
Accumulated amortization on remaining amortizable assets	1,016	955
Net assets	869	1,063
Purchased Software Products [Member]	'	'
Capitalized software and other intangible assets	'	'
Gross amortizable assets	5,698	5,706
Less: Fully amortized assets	4,853	4,849
Remaining amortizable assets	845	857
Accumulated amortization on remaining amortizable assets	356	309
Net assets	489	548
Internally Developed Software Products [Member]	'	'
Capitalized software and other intangible assets	'	'
Gross amortizable assets	1,486	1,561
Less: Fully amortized assets	794	757
Remaining amortizable assets	692	804
Accumulated amortization on remaining amortizable assets	389	397
Net assets	303	407
Other Intangible Assets [Member]	'	'
Capitalized software and other intangible assets	'	'
Gross amortizable assets	839	846
Less: Fully amortized assets	491	489
Remaining amortizable assets	348	357
Accumulated amortization on remaining amortizable assets	271	249
Net assets	$77	$108

Goodwill_Capitalized_Software_3

Goodwill, Capitalized Software and Other Intangible Assets 2 (Details) (USD $)	Sep. 30, 2014
In Millions, unless otherwise specified
Projected annual amortization expense	'
2015	$321
2016	254
2017	195
2018	144
2019	73
Purchased Software Products [Member]	'
Projected annual amortization expense	'
2015	114
2016	110
2017	108
2018	104
2019	62
Internally Developed Software Products [Member]	'
Projected annual amortization expense	'
2015	149
2016	109
2017	79
2018	37
2019	10
Other Intangible Assets [Member]	'
Projected annual amortization expense	'
2015	58
2016	35
2017	8
2018	3
2019	$1

Goodwill_Capitalized_Software_4

Goodwill, Capitalized Software and Other Intangible Assets 3 (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Goodwill activity by segment	'
Balance at March 31, 2014	$5,922
Divestiture adjustment	-109
Foreign currency translation adjustment	-2
Balance at September 30, 2014	5,811
Mainframe Solutions [Member]	'
Goodwill activity by segment	'
Balance at March 31, 2014	4,178
Divestiture adjustment	0
Foreign currency translation adjustment	0
Balance at September 30, 2014	4,178
Enterprise Solutions [Member]	'
Goodwill activity by segment	'
Balance at March 31, 2014	1,663
Divestiture adjustment	-109
Foreign currency translation adjustment	-2
Balance at September 30, 2014	1,552
Services [Member]	'
Goodwill activity by segment	'
Balance at March 31, 2014	81
Divestiture adjustment	0
Foreign currency translation adjustment	0
Balance at September 30, 2014	$81

Goodwill_Capitalized_Software_5

Goodwill, Capitalized Software and Other Intangible Assets 4 (Details) (USD $)	3 Months Ended	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]	'	'
Uncertainty, Continued marketability of goods and services	'	'The Company evaluates the useful lives and recoverability of capitalized software and other intangible assets when events or changes in circumstances indicate that an impairment may exist. These evaluations require complex assumptions about key factors such as future customer demand, technology trends and the impact of those factors on the technology the Company acquires and develops for its products.B Impairments or revisions to useful lives could result from the use of alternative assumptions that reflect reasonably possible outcomes related to future customer demand or technology trends for assets within the Enterprise Solutions segment.
Enterprise Solutions [Member]	'	'
Finite-Lived Intangible Assets [Line Items]	'	'
Impairment of capitalized software and other intangible assets	$13	$13

Deferred_Revenue_Details

Deferred Revenue (Details) (USD $)	Sep. 30, 2014	Mar. 31, 2014
In Millions, unless otherwise specified
Current:	'	'
Total deferred revenue (billed or collected) - current	$1,957	$2,419
Noncurrent:	'	'
Total deferred revenue (billed or collected) - noncurrent	779	872
Total deferred revenue (billed or collected)	2,736	3,291
Subscription and Maintenance [Member]	'	'
Current:	'	'
Total deferred revenue (billed or collected) - current	1,804	2,237
Noncurrent:	'	'
Total deferred revenue (billed or collected) - noncurrent	745	845
Professional Services [Member]	'	'
Current:	'	'
Total deferred revenue (billed or collected) - current	128	149
Noncurrent:	'	'
Total deferred revenue (billed or collected) - noncurrent	31	26
Software Fees and Other [Member]	'	'
Current:	'	'
Total deferred revenue (billed or collected) - current	25	33
Noncurrent:	'	'
Total deferred revenue (billed or collected) - noncurrent	$3	$1

Derivatives_1_Details

Derivatives 1 (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Interest Rate Swaps [Member] | Fair Value Hedges [Member] | Interest Expense, Net [Member]	'	'	'	'
Effect of interest rate and foreign exchange derivatives	'	'	'	'
Amount of net gain from derivative instruments recognized in the Condensed Consolidated Statements of Operations	($3)	($3)	($6)	($6)
Foreign Currency Contracts [Member] | Other Expenses, Net [Member]	'	'	'	'
Effect of interest rate and foreign exchange derivatives	'	'	'	'
Amount of net gain from derivative instruments recognized in the Condensed Consolidated Statements of Operations	($17)	($6)	($12)	($15)

Derivatives_2_Details

Derivatives 2 (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
6.125% Senior Notes due December 2014 [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Total value of Senior Notes subject to fair value interest rate swaps	$500	'
Senior Notes, Interest rate	6.13%	'
Interest Rate Swaps [Member] | Other Current Assets [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of interest rate derivative assets	2	8
Interest Rate Swaps [Member] | Fair Value Hedges [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional value of derivative instruments	500	'
Foreign Currency Contracts [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Notional value of derivative instruments	961	250
Tenure of foreign currency contracts outstanding	'less than six months	'less than three months
Net fair value of foreign currency contracts	22	1
Foreign Currency Contracts [Member] | Other Current Assets [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of foreign currency contracts included in "Other current assets"	25	2
Foreign Currency Contracts [Member] | Accrued Expenses and Other Current Liabilities [Member]	'	'
Derivatives, Fair Value [Line Items]	'	'
Fair value of foreign currency contracts included in "Accrued expenses and other current liabilities"	$3	$1

Fair_Value_Measurements_1_Deta

Fair Value Measurements 1 (Details) (Fair Value, Measurements, Recurring [Member], USD $)	Sep. 30, 2014		Mar. 31, 2014
In Millions, unless otherwise specified
Assets:	'		'
Foreign exchange derivatives	$25	[1]	$2	[1]
Interest rate derivatives	2	[1]	8	[1]
Total assets	1,067		1,287
Liabilities:	'		'
Foreign exchange derivatives	3	[1]	1	[1]
Total liabilities	3		1
Money Market Funds [Member]	'		'
Assets:	'		'
Money market funds	1,040	[2]	1,277	[3]
Fair Value, Inputs, Level 1 [Member]	'		'
Assets:	'		'
Foreign exchange derivatives	0	[1]	0	[1]
Interest rate derivatives	0	[1]	0	[1]
Total assets	1,040		1,277
Liabilities:	'		'
Foreign exchange derivatives	0	[1]	0	[1]
Total liabilities	0		0
Fair Value, Inputs, Level 1 [Member] | Money Market Funds [Member]	'		'
Assets:	'		'
Money market funds	1,040		1,277
Fair Value, Inputs, Level 2 [Member]	'		'
Assets:	'		'
Foreign exchange derivatives	25	[1]	2	[1]
Interest rate derivatives	2	[1]	8	[1]
Total assets	27		10
Liabilities:	'		'
Foreign exchange derivatives	3	[1]	1	[1]
Total liabilities	3		1
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]	'		'
Assets:	'		'
Money market funds	$0		$0
[1]	See Note G, bDerivativesb for additional information. Interest rate derivatives fair value excludes accrued interest.
[2]	At SeptemberB 30, 2014, the Company had approximately $1,040 million and less than $1 million of investments in money market funds classified as bCash and cash equivalentsb and bOther noncurrent assets, netb for restricted cash amounts, respectively, in its Condensed Consolidated Balance Sheet.
[3]	At MarchB 31, 2014, the Company had approximately $1,277 million and less than $1 million of investments in money market funds classified as bCash and cash equivalentsb and bOther noncurrent assets, netb for restricted cash amounts, respectively, in its Condensed Consolidated Balance Sheet.

Fair_Value_Measurements_2_Deta

Fair Value Measurements 2 (Details) (USD $)	Sep. 30, 2014		Mar. 31, 2014
In Millions, unless otherwise specified
Carrying Value [Member]	'		'
Liabilities:	'		'
Total debt	$1,763	[1]	$1,766	[1]
Facility exit reserve	23	[2]	29	[2]
Estimated Fair Value [Member]	'		'
Liabilities:	'		'
Total debt	1,859	[1]	1,884	[1]
Facility exit reserve	$25	[2]	$33	[2]
[1]	Estimated fair value of total debt is based on quoted prices for similar liabilities for which significant inputs are observable except for certain long-term lease obligations, for which fair value approximates carrying value (Level 2).
[2]	Estimated fair value for the facility exit reserve is determined using the Companybs incremental borrowing rate at SeptemberB 30, 2014 and MarchB 31, 2014. At SeptemberB 30, 2014 and MarchB 31, 2014, the facility exit reserve included approximately $9 million and $11 million, respectively, in bAccrued expenses and other current liabilitiesb and approximately $14 million and $18 million, respectively, in bOther noncurrent liabilitiesb in the Companybs Condensed Consolidated Balance Sheets (Level 3).

Fair_Value_Measurements_3_Deta

Fair Value Measurements 3 (Details) (USD $)	6 Months Ended	12 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Mar. 31, 2014
Cash and Cash Equivalents [Member] | Money Market Funds [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Cash and cash equivalents, Fair value disclosure	1,040	1,277
Other Noncurrent Assets, Net [Member] | Money Market Funds [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Other noncurrent assets, net, Fair value disclosure	'less than $1 million	'less than $1 million
Accrued Expenses and Other Current Liabilities [Member] | Facility Exit [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Accrued expenses and other current liabilities, Fair value disclosure	9	11
Other Noncurrent Liabilities [Member] | Facility Exit [Member]	'	'
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]	'	'
Other noncurrent liabilities, Fair value disclosure	14	18

Commitments_and_Contingencies_

Commitments and Contingencies (Details) (USD $)	4 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Commitments and Contingencies Disclosure [Abstract]	'
Alleged damages suffered	'excess of $100 million
Loss contingency, Range of reasonably possible loss, Minimum	$0
Loss contingency, Range of reasonably possible loss, Maximum	$30

Stockholders_Equity_1_Details

Stockholders' Equity 1 (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2013	Jun. 30, 2013
Cash dividends	'	'	'	'
Declaration date	31-Jul-14	15-May-14	1-Aug-13	9-May-13
Dividend per share (in dollars per share)	$0.25	$0.25	$0.25	$0.25
Record date	21-Aug-14	29-May-14	22-Aug-13	23-May-13
Total amount	$111	$111	$114	$114
Payment date	9-Sep-14	17-Jun-14	10-Sep-13	11-Jun-13

Stockholders_Equity_2_Details

Stockholders' Equity 2 (Details) (USD $)	1 Months Ended	6 Months Ended
Share data in Millions, unless otherwise specified	31-May-14	Sep. 30, 2014	Mar. 31, 2014
Equity [Abstract]	'	'	'
Stock repurchase program, Authorized amount	$1,000,000,000	'	'
Shares of common stock repurchased	'	1.7	'
Value of common stock repurchased	'	50,000,000	'
Remaining authorized common stock repurchase amount	'	950,000,000	'
Accumulated other comprehensive loss	'	($255,000,000)	($171,000,000)

Income_From_Continuing_Operati2

Income From Continuing Operations Per Common Share (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Basic income from continuing operations per common share:	'	'	'	'
Income from continuing operations	$235	$231	$447	$561
Less: Income from continuing operations allocable to participating securities	-2	-2	-4	-6
Income from continuing operations allocable to common shares	233	229	443	555
Weighted average common shares outstanding	440	448	440	449
Basic income from continuing operations per common share (in dollars per share)	$0.53	$0.51	$1.01	$1.24
Diluted income from continuing operations per common share:	'	'	'	'
Income from continuing operations	235	231	447	561
Less: Income from continuing operations allocable to participating securities	-2	-2	-4	-6
Income from continuing operations allocable to common shares	$233	$229	$443	$555
Weighted average shares outstanding and common share equivalents:	'	'	'	'
Weighted average common shares outstanding	440	448	440	449
Weighted average effect of share-based payment awards	1	2	1	1
Denominator in calculation of diluted income per share	441	450	441	450
Diluted income from continuing operations per common share (in dollars per share)	$0.53	$0.51	$1	$1.23
Income from continuing operations per common share, Other disclosures [Abstract]	'	'	'	'
Number of anti-dilutive restricted stock awards and options excluded from the calculation	2	2	2	2
Weighted average restricted stock awards considered participating securities	5	5	4	5

Accounting_for_ShareBased_Comp2

Accounting for Share-Based Compensation 1 (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Recognized share-based compensation	'	'	'	'
Share-based compensation expense before tax	$22	$20	$42	$40
Income tax benefit	-7	-6	-13	-13
Net share-based compensation expense	15	14	29	27
Costs of Licensing and Maintenance [Member]	'	'	'	'
Recognized share-based compensation	'	'	'	'
Share-based compensation expense before tax	1	1	2	2
Cost of Professional Services [Member]	'	'	'	'
Recognized share-based compensation	'	'	'	'
Share-based compensation expense before tax	1	1	2	2
Selling and Marketing [Member]	'	'	'	'
Recognized share-based compensation	'	'	'	'
Share-based compensation expense before tax	8	7	15	14
General and Administrative [Member]	'	'	'	'
Recognized share-based compensation	'	'	'	'
Share-based compensation expense before tax	7	6	13	12
Product Development and Enhancements [Member]	'	'	'	'
Recognized share-based compensation	'	'	'	'
Share-based compensation expense before tax	$5	$5	$10	$10

Accounting_for_ShareBased_Comp3

Accounting for Share-Based Compensation 2 (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014
Unrecognized share-based compensation costs	'
Unrecognized share-based compensation costs	$140
Weighted average period expected to be recognized (in years)	'2 years 3 months 18 days
Stock Option Awards [Member]	'
Unrecognized share-based compensation costs	'
Unrecognized share-based compensation costs	7
Weighted average period expected to be recognized (in years)	'2 years 0 months 0 days
Restricted Stock Units [Member]	'
Unrecognized share-based compensation costs	'
Unrecognized share-based compensation costs	23
Weighted average period expected to be recognized (in years)	'2 years 2 months 12 days
Restricted Stock Awards [Member]	'
Unrecognized share-based compensation costs	'
Unrecognized share-based compensation costs	81
Weighted average period expected to be recognized (in years)	'2 years 2 months 12 days
Performance Share Units [Member]	'
Unrecognized share-based compensation costs	'
Unrecognized share-based compensation costs	$29
Weighted average period expected to be recognized (in years)	'2 years 9 months 18 days

Accounting_for_ShareBased_Comp4

Accounting for Share-Based Compensation 3 (Details) (USD $)	6 Months Ended
	Sep. 30, 2014		Sep. 30, 2013
Weighted average fair values and assumptions used for options granted	'		'
Weighted average fair value (in dollars per share)	$5.87		$5.19
Dividend yield	3.29%		4.05%
Expected volatility factor	29.00%	[1]	30.00%	[1]
Risk-free interest rate	2.10%	[2]	1.50%	[2]
Expected life (in years)	'6 years	[3]	'6 years	[3]
[1]	Expected volatility is measured using historical daily price changes of the Companybs stock over the respective expected term of the options and the implied volatility derived from the market prices of the Companybs traded options.
[2]	The risk-free rate for periods within the contractual term of the stock options is based on the U.S. Treasury yield curve in effect at the time of grant.
[3]	The expected life is the number of years the Company estimates that options will be outstanding prior to exercise. The Companybs computation of expected life was determined based on the simplified method (the average of the vesting period and option term).

Accounting_for_ShareBased_Comp5

Accounting for Share-Based Compensation 4 (Details) (USD $)	3 Months Ended				6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Restricted Stock Awards (RSAs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	0.1		0	[1]	3		2.7
Weighted average grant date fair value (in dollars per share)	$28.29	[2]	$30.39	[2]	$28.95	[2]	$27.01	[2]
Restricted Stock Units (RSUs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	0	[1]	0	[1]	0.8		0.8
Weighted average grant date fair value (in dollars per share)	$26.33	[3]	$30.13	[3]	$26.91	[3]	$25.37	[3]
1-Year PSUs for Fiscal Year 2014 Incentive Plans [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Performance period (in years)	'		'		'1 year		'
1-Year PSUs for Fiscal Year 2014 Incentive Plans [Member] | Restricted Stock Awards (RSAs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	'		'		0.7		'
Weighted average grant date fair value (in dollars per share)	'		'		$29.91		'
1-Year PSUs for Fiscal Year 2014 Incentive Plans [Member] | Restricted Stock Units (RSUs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	'		'		0.1		'
Weighted average grant date fair value (in dollars per share)	'		'		$28.92		'
1-Year PSUs for Fiscal Year 2013 Incentive Plans [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Performance period (in years)	'		'		'		'1 year
1-Year PSUs for Fiscal Year 2013 Incentive Plans [Member] | Restricted Stock Awards (RSAs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	'		'		'		0.4
Weighted average grant date fair value (in dollars per share)	'		'		'		$27.11
1-Year PSUs for Fiscal Year 2013 Incentive Plans [Member] | Restricted Stock Units (RSUs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	'		'		'		0.1
Weighted average grant date fair value (in dollars per share)	'		'		'		$26.12
1-Year PSUs for Fiscal Year 2014 Sales Retention Equity Programs [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Performance period (in years)	'		'		'1 year		'
1-Year PSUs for Fiscal Year 2014 Sales Retention Equity Programs [Member] | Restricted Stock Awards (RSAs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	'		'		0.2		'
Weighted average grant date fair value (in dollars per share)	'		'		$28.69		'
1-Year PSUs for Fiscal Year 2014 Sales Retention Equity Programs [Member] | Restricted Stock Units (RSUs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	'		'		0.1		'
Weighted average grant date fair value (in dollars per share)	'		'		$25.73		'
1-Year PSUs for Fiscal Year 2013 Sales Retention Equity Programs [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Performance period (in years)	'		'		'		'1 year
1-Year PSUs for Fiscal Year 2013 Sales Retention Equity Programs [Member] | Restricted Stock Awards (RSAs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	'		'		'		0.2
Weighted average grant date fair value (in dollars per share)	'		'		'		$27.11
1-Year PSUs for Fiscal Year 2013 Sales Retention Equity Programs [Member] | Restricted Stock Units (RSUs) [Member]	'		'		'		'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'		'		'		'
Shares	'		'		'		0.1
Weighted average grant date fair value (in dollars per share)	'		'		'		$24.13
[1]	Less than 0.1 million.
[2]	The fair value is based on the quoted market value of the Companybs common stock on the grant date.
[3]	The fair value is based on the quoted market value of the Companybs common stock on the grant date reduced by the present value of dividends expected to be paid on the Companybs common stock prior to vesting of the RSUs, which is calculated using a risk-free interest rate.

Accounting_for_ShareBased_Comp6

Accounting for Share-Based Compensation 5 (Details) (USD $)	3 Months Ended				6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Restricted Stock Awards (RSAs) [Member]	'		'		'		'
Summary of all RSAs and RSUs granted	'		'		'		'
Shares	0.1		0	[1]	3		2.7
Weighted average grant date fair value (in dollars per share)	$28.29	[2]	$30.39	[2]	$28.95	[2]	$27.01	[2]
Restricted Stock Units (RSUs) [Member]	'		'		'		'
Summary of all RSAs and RSUs granted	'		'		'		'
Shares	0	[1]	0	[1]	0.8		0.8
Weighted average grant date fair value (in dollars per share)	$26.33	[3]	$30.13	[3]	$26.91	[3]	$25.37	[3]
[1]	Less than 0.1 million.
[2]	The fair value is based on the quoted market value of the Companybs common stock on the grant date.
[3]	The fair value is based on the quoted market value of the Companybs common stock on the grant date reduced by the present value of dividends expected to be paid on the Companybs common stock prior to vesting of the RSUs, which is calculated using a risk-free interest rate.

Accounting_for_ShareBased_Comp7

Accounting for Share-Based Compensation 6 (Details) (USD $)	6 Months Ended				6 Months Ended
In Millions, except Per Share data, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Jun. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014
			Employee Stock Purchase Plan [Member]	Employee Stock Purchase Plan [Member]	1-Year PSU Awards [Member]	1-Year PSU Awards [Member]	1-Year PSU Awards [Member]	Share-Based Awards Under Sales Retention Equity Programs [Member]
					Grant Date [Member]	First Anniversary [Member]	Second Anniversary [Member]
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]	'	'	'	'	'	'	'	'
Stock options issued	0.6	1.6	'	'	'	'	'	'
Computation of expected life, Simplified method	'The Companybs computation of expected life was determined based on the simplified method (the average of the vesting period and option term).	'	'	'	'	'	'	'
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]	'	'	'	'	'	'	'	'
Award vesting percentage	'	'	'	'	34.00%	33.00%	33.00%	'
Award vesting period from grant date (in years)	'	'	'	'	'	'	'	'3 years
Percentage of stock closing price on last day of offer period that ESPP participants can purchase Company stock	'	'	95.00%	'	'	'	'	'
Number of shares issued under ESPP	'	'	0.1	'	'	'	'	'
Share price issued under ESPP (in dollars per share)	'	'	$27.30	'	'	'	'	'
Number of shares available for future issuances under ESPP	'	'	'	29.5	'	'	'	'

Income_Taxes_Details

Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Income Tax Disclosure [Abstract]	'	'	'	'
Income tax expense (benefit)	$73	$101	$160	($21)
Net discrete tax benefit recognized primarily from resolutions of uncertain tax positions upon completion of U.S. federal income tax returns examination	$19	'	$19	$179
Estimated annual effective tax rate, which excludes impact of discrete items	'	'	29.20%	29.20%
Expected fiscal year 2015 effective tax rate	'	'	30.00%	'

Supplemental_Statement_of_Cash2

Supplemental Statement of Cash Flows Information 1 (Details) (Notional Pooling Arrangement [Member], USD $)	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013
Notional Pooling Arrangement [Member]	'		'
Activity under cash pooling arrangement	'		'
Total borrowings outstanding at beginning of period	$139	[1]	$136	[1]
Borrowings	2,703		1,609
Repayments	-2,647		-1,639
Foreign currency exchange effect	-56		20
Total borrowings outstanding at end of period	$139	[1]	$126	[1]
[1]	Included in bAccrued expenses and other current liabilitiesb in the Companybs Condensed Consolidated Balance Sheets.

Supplemental_Statement_of_Cash3

Supplemental Statement of Cash Flows Information 2 (Details) (USD $)	6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013
Supplemental Cash Flow Information [Abstract]	'	'
Interest payments, net	$40	$31
Income taxes paid, net	181	246
Excess tax benefits from share-based incentive awards included in financing activities from continuing operations	3	3
Share-based incentive awards, Non-cash financing activities	42	46
Withholding taxes on share-based incentive awards, Non-cash financing activities	27	27
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	$3	$2

Segment_Information_1_Details

Segment Information 1 (Details) (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Segment information	'		'		'		'
Revenue	$1,079		$1,105		$2,148		$2,200
Income from continuing operations before interest and income taxes	320		345		633		564
Reconciliation of segment profit to income from continuing operations before income taxes	'		'		'		'
Segment profit	320		345		633		564
Software development costs capitalized	0		-8		0		-31
Share-based compensation expense	22		20		42		40
Other expenses, net	-4	[1]	7	[2]	8	[3]	122	[4]
Interest expense, net	12		13		26		24
Income from continuing operations before income taxes	308		332		607		540
Purchased Software Products [Member]	'		'		'		'
Reconciliation of segment profit to income from continuing operations before income taxes	'		'		'		'
Amortization of intangible assets	31		31		59		59
Other Intangible Assets [Member]	'		'		'		'
Reconciliation of segment profit to income from continuing operations before income taxes	'		'		'		'
Amortization of intangible assets	16		15		31		29
Internally Developed Software Products [Member]	'		'		'		'
Reconciliation of segment profit to income from continuing operations before income taxes	'		'		'		'
Amortization of intangible assets	44		38		83		76
Mainframe Solutions [Member]	'		'		'		'
Segment information	'		'		'		'
Revenue	610		624		1,224		1,243
Expenses	234		232		469		475
Income from continuing operations before interest and income taxes	376		392		755		768
Segment operating margin	62.00%		63.00%		62.00%		62.00%
Depreciation	11		13		23		27
Reconciliation of segment profit to income from continuing operations before income taxes	'		'		'		'
Segment profit	376		392		755		768
Enterprise Solutions [Member]	'		'		'		'
Segment information	'		'		'		'
Revenue	378		384		746		762
Expenses	327		337		652		688
Income from continuing operations before interest and income taxes	51		47		94		74
Segment operating margin	13.00%		12.00%		13.00%		10.00%
Depreciation	7		9		14		17
Reconciliation of segment profit to income from continuing operations before income taxes	'		'		'		'
Segment profit	51		47		94		74
Services [Member]	'		'		'		'
Segment information	'		'		'		'
Revenue	91		97		178		195
Expenses	89		88		171		178
Income from continuing operations before interest and income taxes	2		9		7		17
Segment operating margin	2.00%		9.00%		4.00%		9.00%
Depreciation	0		0		0		0
Reconciliation of segment profit to income from continuing operations before income taxes	'		'		'		'
Segment profit	2		9		7		17
Total Reportable Segments [Member]	'		'		'		'
Segment information	'		'		'		'
Revenue	1,079		1,105		2,148		2,200
Expenses	650		657		1,292		1,341
Income from continuing operations before interest and income taxes	429		448		856		859
Segment operating margin	40.00%		41.00%		40.00%		39.00%
Depreciation	18		22		37		44
Reconciliation of segment profit to income from continuing operations before income taxes	'		'		'		'
Segment profit	$429		$448		$856		$859
[1]	Other expenses, net consists of approximately $12 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
[2]	Other expenses, net consists of approximately $2 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
[3]	Other expenses, net consists of approximately $21 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.
[4]	Other expenses, net consists of approximately $119 million of costs associated with the Fiscal 2014 Plan, certain foreign exchange derivative hedging gains and losses, and other miscellaneous costs.

Segment_Information_2_Details

Segment Information 2 (Details) (USD $)	3 Months Ended				6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Revenue from the United States and international locations	'		'		'		'
Total revenue	$1,079		$1,105		$2,148		$2,200
United States [Member]	'		'		'		'
Revenue from the United States and international locations	'		'		'		'
Total revenue	656		671		1,299		1,328
EMEA [Member]	'		'		'		'
Revenue from the United States and international locations	'		'		'		'
Total revenue	259	[1]	267	[1]	518	[1]	531	[1]
Other [Member]	'		'		'		'
Revenue from the United States and international locations	'		'		'		'
Total revenue	$164		$167		$331		$341
[1]	Consists of Europe, the Middle East and Africa.

Segment_Information_3_Details

Segment Information 3 (Details) (Fiscal 2014 Plan [Member], USD $)	3 Months Ended		6 Months Ended
In Millions, unless otherwise specified	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Fiscal 2014 Plan [Member]	'	'	'	'
Segment Reporting [Line Items]	'	'	'	'
Rebalancing charges	$12	$2	$21	$119