Other Comprehensive Income Other Comprehensive Income (Tables)

6 Months Ended

Jun. 30, 2019

Accumulated Other Comprehensive Income (Loss) [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

				Pension Adjustments
	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments		Other			Total
Balance at March 31, 2019	$	(55	)	$	(87	)	$	(4	)	$	4	$	(1	)	$	(144	)
Other comprehensive income (loss) before reclassifications	1			—			—			—		—			1
Income taxes	—			—			—			—		—			—
Net other comprehensive income (loss) before reclassifications	1			—			—			—		—			1
Amounts reclassified from accumulated comprehensive income (loss)	—			1			—			—		—			1
Income taxes	—			—			—			—		—			—
Net amounts reclassified from cumulative other comprehensive income (loss)	—			1			—			—		—			1
Total other comprehensive income (loss)	1			1			—			—		—			2
Balance at June 30, 2019	$	(54	)	$	(87	)	$	(4	)	$	4	$	(1	)	$	(143	)

				Pension Adjustments
	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments			Other			Total
Balance at December 31, 2018	$	(57	)	$	(88	)	$	(5	)	$	4		$	(1	)	$	(146	)
Other comprehensive income (loss) before reclassifications	3			—			—			(1		)	—			2
Income taxes	—			—			—			—			—			—
Net other comprehensive income (loss) before reclassifications	3			—			—			(1		)	—			2
Amounts reclassified from accumulated comprehensive income (loss)	—			2			—			—			—			3
Income taxes	—			(1		)	—			—			—			(1		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			2			—			—			—			2
Total other comprehensive income (loss)	3			2			—			(1		)	—			4
Balance at June 30, 2019	$	(54	)	$	(87	)	$	(4	)	$	4		$	(1	)	$	(143	)

				Pension Adjustments
	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments		Other			Total
Balance at March 31, 2018	$	(37	)	$	(96	)	$	(5	)	$	4	$	(2	)	$	(135	)
Other comprehensive income (loss) before reclassifications	(14		)	—			—			—		—			(14		)
Income taxes	—			—			—			—		—			—
Net other comprehensive income (loss) before reclassifications	(14		)	—			—			—		—			(14		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			2			—			—		—			2
Income taxes	—			—			—			—		—			—
Net amounts reclassified from cumulative other comprehensive income (loss)	—			1			—			—		—			1
Total other comprehensive income (loss)	(14		)	1			—			—		—			(12		)
Balance at June 30, 2018	$	(51	)	$	(94	)	$	(5	)	$	4	$	(1	)	$	(147	)

				Pension Adjustments
	Foreign currency translation adjustments			Actuarial losses			Prior service costs			Unrealized gain (loss) on investments		Other			Total
Balance at December 31, 2017	$	(40	)	$	(80	)	$	(5	)	$	4	$	(2	)	$	(122	)
Effect of adoption of ASU 2018-02				(17		)				1					(17		)
Other comprehensive income (loss) before reclassifications	(12		)	—			—			—		—			(11		)
Income taxes	—			—			—			—		—			—
Net other comprehensive income (loss) before reclassifications	(12		)	—			—			—		—			(11		)
Amounts reclassified from accumulated other comprehensive income (loss)	—			3			—			—		—			3
Income taxes	—			(1		)	—			—		—			(1		)
Net amounts reclassified from cumulative other comprehensive income (loss)	—			2			—			—		—			3
Total other comprehensive income (loss)	(12		)	3			—			—		—			(9		)
Balance at June 30, 2018	$	(51	)	$	(94	)	$	(5	)	$	4	$	(1	)	$	(147	)