Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2019

Compensation And Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Cost

The following tables set forth the components of net periodic benefit (income)/cost for the Company’s defined benefit pension and PRW plans for the three and six months ended June 30, 2019 and 2018:

	Three Months Ended June 30,
	2019												2018
	U.S.			U.K.			Other			PRW			U.S.			U.K.			Other			PRW
Service cost	$	16		$	3		$	5		$	—		$	17		$	5		$	5		$	—
Interest cost		39			23			5			1			35			24			4			1
Expected return on plan assets		(63	)		(62	)		(8	)		—			(69	)		(77	)		(7	)		—
Settlement		—			—			—			—			—			20			—			—
Amortization of net loss		5			5			—			—			3			12			1			—
Amortization of prior service credit		—			(4	)		—			(1	)		—			(5	)		—			—
Net periodic benefit (income)/cost	$	(3	)	$	(35	)	$	2		$	—		$	(14	)	$	(21	)	$	3		$	1

	Six Months Ended June 30,
	2019												2018
	U.S.			U.K.			Other			PRW			U.S.			U.K.			Other			PRW
Service cost	$	32		$	7		$	10		$	—		$	33		$	10		$	10		$	—
Interest cost		79			47			9			2			70			48			9			2
Expected return on plan assets		(127	)		(125	)		(15	)		—			(137	)		(155	)		(15	)		—
Settlement		—			—			—			—			—			20			—			—
Amortization of net loss		10			10			1			—			6			24			1			—
Amortization of prior service credit		—			(8	)		—			(2	)		—			(10	)		—			—
Net periodic benefit (income)/cost	$	(6	)	$	(69	)	$	5		$	—		$	(28	)	$	(63	)	$	5		$	2