Subsequent Events (Details) - USD ($)	Apr. 01, 2017	Mar. 31, 2017
Credit facility | Revolving credit facility
Subsequent Event [Line Items]
Total borrowing capacity		$ 3,000,000,000
Subsequent event | CSC and HPES Merger
Subsequent Event [Line Items]
Purchase consideration	$ 10,000,000,000
Common stock issued per one share of CSC common stock	1
Subsequent event | CSC and HPES Merger | Credit facility | Revolving credit facility
Subsequent Event [Line Items]
Revolving credit facility increase	$ 740,000,000
Total borrowing capacity	$ 3,700,000,000.0
Subsequent event | CSC and HPES Merger | DXC
Subsequent Event [Line Items]
Equity interest issued (in shares)	141,298,797
Percentage of outstanding shares owned subsequent to merger	49.90%