Supplemental Quarterly Information (Tables)

12 Months Ended

Dec. 31, 2019

Quarterly Financial Information Disclosure [Abstract]

Schedule of Supplemental Quarterly Information

(Millions of dollars except per share amounts)	First Quarter			Second Quarter		Third Quarter	Fourth Quarter		Year
Year ended December 31, 2019
Revenue from contracts with customers	$	629.4		680.4		750.3	757.0		2,817.1
Income (loss) from continuing operations before income taxes	33.7			107.9		177.1	(115.3	)	203.5
Income (loss) from continuing operations	22.9			98.8		158.3	(91.3	)	188.8
Net income (loss) including noncontrolling interest	72.8			123.2		1,111.7	(54.4	)	1,253.3
Net income (loss) attributable to Murphy	40.2			92.3		1,089.0	(71.7	)	1,149.7
Income (loss) from continuing operations per Common share
Basic	(0.06		)	0.40		0.85	(0.71	)	0.52
Diluted	(0.06		)	0.40		0.84	(0.70	)	0.52
Net income (loss) per Common share
Basic	0.23			0.55		6.79	(0.71	)	7.01
Diluted	0.23			0.54		6.76	(0.47	)	6.98
Cash dividend per Common share	0.25			0.25		0.25	0.25		1.00
Year ended December 31, 2018
Revenue from contracts with customers	$	411.9		443.0		475.5	476.1		1,806.5
Income (loss) from continuing operations before income taxes	(21.1		)	(22.6	)	74.0	12.7		43.0
Income (loss) from continuing operations	90.6			(25.2	)	56.1	47.6		169.1
Net income including noncontrolling interest	168.3			45.5		93.9	111.8		419.5
Net income attributable to Murphy	168.3			45.5		93.9	103.4		411.1
Income (loss) from continuing operations per Common share
Basic	0.52			(0.14	)	0.32	0.23		0.92
Diluted	0.52			(0.15	)	0.32	0.22		0.92
Net income (loss) per Common share
Basic	0.97			0.27		0.54	0.60		2.38
Diluted	0.96			0.25		0.54	0.59		2.36
Cash dividend per Common share	0.25			0.25		0.25	0.25		1.00

Includes noncontrolling interest in MP GOM.