CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Dec. 30, 2016	Jan. 01, 2016		Dec. 30, 2016	Jan. 01, 2016
Statement of Comprehensive Income [Abstract]
Net Income		$ 37	$ 52	[1]	$ 38	$ 396	[1],[2],[3]
Other comprehensive loss, net of taxes:
Foreign currency translation adjustments, net of tax	[4]	(174)	(17)		(180)	(74)
Cash flow hedges adjustments		6	7		15	(5)
Pension and other post-retirement benefit plans, net of tax
Amortization of prior service costs, net of tax	[5]	(3)	(4)		(10)	(16)
Foreign currency exchange rate changes		0	0		0	(1)
Pension and other post-retirement benefit plans, net of tax		(3)	(4)		(10)	(17)
Other comprehensive loss, net of taxes		(171)	(14)		(175)	(96)	[2]
Comprehensive (loss) income		(134)	38		(137)	300
Less: comprehensive income attributable to noncontrolling interest, net of taxes		6	2		13	12
Comprehensive (loss) income attributable to CSC common stockholders		(140)	36		(150)	288
Foreign currency translation adjustments, net of tax expense		0	1		(1)	1
Amortization of prior service costs, net of tax benefit		$ 2	$ 3		$ 5	$ 8

[1] Certain prior year balances were adjusted for certain errors in previously issued financial statements related to income taxes and for the adoption of ASU 2016-09 related to employee stock-based compensation. See Note 20 - Reconciliation of Previously Reported Amounts.

[2] Certain prior year balances were adjusted for certain errors in previously issued financial statements related to income taxes and for the adoption of ASU 2016-09 related to employee stock-based compensation as described in Note 20 - Reconciliation of Previously Reported Amounts.

[3] Certain prior year balances were adjusted for certain errors in previously issued financial statements related to income taxes and for the adoption of ASU 2016-09 related to employee stock-based compensation. See Note 20 - Reconciliation of Previously Reported Amounts.

[4] Tax (expense) benefit related to foreign currency translation adjustments was $0 and $(1), respectively, for the three and nine months ended December 30, 2016, and $1 for the three and nine months ended January 1, 2016.

[5] Tax benefit related to amortization of prior service costs was $2 and $5, respectively, for the three and nine months ended December 30, 2016, and $3 and $8, respectively, for the three and nine months ended January 1, 2016.