The following is a summary of the charges and credits recorded during the first six months of 2017:

	(Stated in millions)

					Noncontrolling
	Pretax		Tax		Interests		Net
Promissory note fair value adjustment and other	$	510	$	-	$	12	$	498
Merger & integration		164		31		-		133
	$	674	$	31	$	12	$	631

The following is a summary of the charges and credits recorded during the second quarter of 2016:

	(Stated in millions)

	Pretax		Tax		Net
Impairments & other
Workforce reduction	$	646	$	63	$	583
North America pressure pumping asset impairments		209		67		142
Facilities impairments		165		58		107
Other fixed asset impairments		684		52		632
Inventory write-downs		616		49		567
Multiclient seismic data impairment		198		62		136
Other restructuring charges		55		-		55
Merger & integration
Merger-related employee benefits		47		7		40
Professional fees		45		10		35
Facility closure costs		40		10		30
Other merger and integration-related		53		9		44
Amortization of inventory fair value adjustment		150		45		105
	$	2,908	$	432	$	2,476