CONDENSED CONSOLIDATED STATEMENTS OF EQUITY (UNAUDITED) (PARENTHETICAL) - shares	Mar. 31, 2018		Dec. 31, 2017		Apr. 02, 2017	Oct. 02, 2016	[1]	Dec. 31, 2015	[1]
Statement of Stockholders' Equity [Abstract]
Common stock, shares outstanding	484,724,245		486,130,461		491,328,479
Treasury stock, shares	17,166,998	[1]	15,760,782	[1]	10,562,764	10,560,000		9,040,000

[1] Shares may not add due to rounding.