Disputes, Litigation and Contingencies (Details) $ in Millions			12 Months Ended
	Sep. 27, 2016	Jul. 31, 2015 patent	Dec. 31, 2010 lawsuit	Mar. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Jun. 30, 2016 USD ($)
Loss Contingencies [Line Items]
Loss Contingency, Patents Allegedly Infringed, Number | patent		7
Estimated litigation liability				$ 47	$ 51
Recorded unconditional purchase obligation				47
Other Current Liabilities
Loss Contingencies [Line Items]
Recorded unconditional purchase obligation				22
Other Noncurrent Liabilities
Loss Contingencies [Line Items]
Recorded unconditional purchase obligation				$ 25
Neff v. Brady, et al.
Loss Contingencies [Line Items]
Number of actions filed (in lawsuits) | lawsuit			3
U.S. SEC and DOJ Investigation
Loss Contingencies [Line Items]
Loss contingency accrual						$ 140
Period of time in which reports and certifications are delivered regarding tax internal controls	2 years