Supplementary Information (Other Current Assets) (Details) - USD ($) $ in Millions	1 Months Ended
	Oct. 31, 2018	Sep. 28, 2018	Mar. 31, 2018	Mar. 30, 2018
Subsequent Event [Line Items]
Prepaid expenses		$ 162		$ 177
Income tax receivable and prepaid income taxes		64	$ 99	107
Short-term deferred commissions		92	86	94
Assets held for sale		26		26
Other		101		118
Total other current assets		$ 445	$ 506	$ 522	[1]
Subsequent Event
Subsequent Event [Line Items]
Proceeds from Sale of Productive Assets	$ 26

[1] Derived from audited financial statements.