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Acquisitions - Pro Forma (Details) - FNF - Commissions, Inc. - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Business Acquisition [Line Items]    
Total revenues $ 7,285 $ 6,695
Net earnings attributable to Fidelity National Financial, Inc. common shareholders $ 653 $ 529