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Net Earnings Per Share Narrative (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
	Mar. 31, 2017	Apr. 13, 2017	Dec. 31, 2016	Jul. 01, 2016	Nov. 10, 2015
Earnings Per Share [Abstract]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	1,800,000
Common stock outstanding (in shares)	346,600,000		345,900,000	345,200,000	0
Common Stock, Dividends, Per Share, Cash Paid	$ 0.07
Subsequent Event
Subsequent Event [Line Items]
Dividends Payable, Amount Per Share		$ 0.07
Retained Earnings
Earnings Per Share [Abstract]
Dividends, Common Stock, Cash	$ 24.2