United states securities and exchange commission

In 2016 , U.S. plans with a projected benefit obligation (“PBO”) and an accumulated benefit obligation (“ABO”) in excess of the fair value of plan assets had a PBO of $2.9 billion , an ABO of $2.9 billion , and plan assets with a fair value of $1.7 billion . U.K. plans with a PBO in excess of the fair value of plan assets had a PBO of $1.2 billion and plan assets with a fair value of $1.1 billion , and plans with an ABO in excess of the fair value of plan assets had an ABO of $1.2 billion and plan assets with a fair value of $1.1 billion . Other plans with a PBO in excess of the fair value of plan assets had a PBO of $1.2 billion and plan assets with a fair value of $1.0 billion , and plans with an ABO in excess of the fair value of plan assets had an ABO of $1.1 billion and plan assets with a fair value of $1.0 billion .

In 2015 , U.S. plans with a PBO and an ABO in excess of the fair value of plan assets had a PBO of $3.2 billion , an ABO of $3.2 billion , and plan assets of $2.0 billion . U.K. plans with a PBO in excess of the fair value of plan assets had a PBO of $1.2 billion and plan assets with a fair value of $1.1 billion , and plans with an ABO in excess of the fair value of plan assets had an ABO of $1.2 billion and plan assets with a fair value of $1.1 billion . Other plans with a PBO in excess of the fair value of plan assets had a PBO of $1.2 billion and plan assets with a fair value of $1.0 billion , and plans with an ABO in excess of the fair value of plan assets had an ABO of $1.1 billion and plan assets with a fair value of $1.0 billion .

The following table provides the components of net periodic benefit (income) cost for the plans (in millions):

	U.K.												U.S.												Other
	2016				2015				2014				2016				2015				2014				2016				2015				2014
Service cost	$	—			$	1			$	1			$	—			$	—			$	2			$	—			$	—			$	—
Interest cost	158				198				230				111				131				129				29				33				47
Expected return on plan assets, net of administration expenses	(243		)		(307		)		(326		)		(156		)		(154		)		(157		)		(48		)		(50		)		(59		)
Amortization of prior-service cost	2				1				1				2				2				2				—				—				—
Amortization of net actuarial loss	31				41				52				50				54				42				10				11				10
Net periodic benefit (income) cost	(52		)		(66		)		(42		)		7				33				18				(9		)		(6		)		(2		)
Settlement expense	61				—				—				158				—				—				—				—				—
Curtailment gain and other	—				—				—				—				—				—				—				—				(2		)
Total net periodic benefit cost (income)	$	9			$	(66	)		$	(42	)		$	165			$	33			$	18			$	(9	)		$	(6	)		$	(4	)