Restructuring - Summary of Details for Charges Recorded (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2016	Mar. 31, 2014
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	$ 207
Exit-related costs	5
Asset impairments and accelerated depreciation and amortization	17
Total	229	$ 229
Cost of Sales
Restructuring Cost and Reserve [Line Items]
Total	26
Operating Expenses
Restructuring Cost and Reserve [Line Items]
Total	203
Technology Solutions
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net			$ 7
Operating Segments | Distribution Solutions
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	147
Exit-related costs	3
Asset impairments and accelerated depreciation and amortization	11
Total	161	161
Operating Segments | Distribution Solutions | Cost of Sales
Restructuring Cost and Reserve [Line Items]
Total	5
Operating Segments | Distribution Solutions | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Total	156
Operating Segments | Technology Solutions
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	44
Exit-related costs	1
Asset impairments and accelerated depreciation and amortization	6
Total	51	51
Operating Segments | Technology Solutions | Cost of Sales
Restructuring Cost and Reserve [Line Items]
Total	21
Operating Segments | Technology Solutions | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Total	30
Corporate
Restructuring Cost and Reserve [Line Items]
Severance and employee-related costs, net	16
Exit-related costs	1
Asset impairments and accelerated depreciation and amortization	0
Total	17	$ 17
Corporate | Cost of Sales
Restructuring Cost and Reserve [Line Items]
Total	0
Corporate | Operating Expenses
Restructuring Cost and Reserve [Line Items]
Total	$ 17