Segment Reporting - Segment Assets for Continuing Operations and Discontinued Operations (Detail) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Total assets - continuing operations	$ 5,849	$ 6,258
Total assets - discontinued operations	2,451	2,479
Total assets	8,300	8,737
Operating Segments [Member] | NCSA [Member]
Segment Reporting Information [Line Items]
Total assets - continuing operations	1,657	1,526
Operating Segments [Member] | EARC [Member]
Segment Reporting Information [Line Items]
Total assets - continuing operations	453	523
Operating Segments [Member] | MENA [Member]
Segment Reporting Information [Line Items]
Total assets - continuing operations	1,123	1,195
Operating Segments [Member] | APAC [Member]
Segment Reporting Information [Line Items]
Total assets - continuing operations	734	1,447
Operating Segments [Member] | Storage Solutions [Member]
Segment Reporting Information [Line Items]
Total assets - continuing operations	535	523
Corporate [Member]
Segment Reporting Information [Line Items]
Total assets - continuing operations	$ 1,347	$ 1,044