Commitments and Contingencies (Details) $ in Millions		12 Months Ended
	Nov. 06, 2017 Claim	Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Number of lawsuits filed | Claim	2
Sharecare [Member]
Contractual Commitments [Abstract]
Period over which payments are to be made to joint venture		5 years
Remaining payment obligation responsibility percentage		66.67%
Payment obligation included in accrued liabilities | $		$ 0.8