Retirement Benefits (Tables)

6 Months Ended

Jun. 30, 2020

Compensation And Retirement Disclosure [Abstract]

Schedule of Net Periodic Benefit Cost

The following table sets 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, 2020 and 2019:

	Three Months Ended June 30,
	2020												2019
	U.S.			U.K.			Other			PRW			U.S.			U.K.			Other			PRW
Service cost	$	18		$	3		$	5		$	—		$	16		$	3		$	5		$	—
Interest cost		33			18			3			—			39			23			5			1
Expected return on plan assets		(72	)		(59	)		(9	)		—			(63	)		(62	)		(8	)		—
Settlement		2			1			—			—			—			—			—			—
Amortization of net loss		8			5			2			1			5			5			—			—
Amortization of prior service credit		—			(4	)		—			(1	)		—			(4	)		—			(1	)
Net periodic benefit (income)/cost	$	(11	)	$	(36	)	$	1		$	—		$	(3	)	$	(35	)	$	2		$	—

	Six Months Ended June 30,
	2020												2019
	U.S.			U.K.			Other			PRW			U.S.			U.K.			Other			PRW
Service cost	$	36		$	7		$	10		$	—		$	32		$	7		$	10		$	—
Interest cost		66			36			7			1			79			47			9			2
Expected return on plan assets		(145	)		(121	)		(17	)		—			(127	)		(125	)		(15	)		—
Settlement		2			1			—			—			—			—			—			—
Amortization of net loss		17			11			2			1			10			10			1			—
Amortization of prior service credit		—			(8	)		—			(2	)		—			(8	)		—			(2	)
Net periodic benefit (income)/cost	$	(24	)	$	(74	)	$	2		$	—		$	(6	)	$	(69	)	$	5		$	—