Basis of Presentation and Significant Accounting Policies - Earnings Per Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accounting Policies [Abstract]
Weighted Average Number Diluted Shares Outstanding Adjustment	594,000
Net income (loss) attributable to Continental Resources (numerator)
Net income (loss) attributable to Continental Resources (numerator)	$ (185,664)	$ 186,976
Weighted average shares - basic	365,403,000	372,563,000
Non-vested restricted stock (1)	0	1,911,000
Weighted average shares - diluted	365,403,000	374,474,000
Net income (loss) per share attributable to Continental Resources:
Basic (in dollars per share)	$ (0.51)	$ 0.50
Diluted (in dollars per share)	$ (0.51)	$ 0.50