Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2018

Significant Accounting Policies [Abstract]

Results of the Adoption of These Standards on the Company’s Consolidated Statements of Stockholders’ Equity Previously Reported

(In millions)		Accumulated other comprehensive income		Accumulated deficit
As reported, December 31, 2017	$	5	$	(895)
Impact of adopting ASC 606 (Note 3)		—		16
Impact of adopting ASU 2016-01		(2)		2
Impact of adopting ASU 2018-02		4		(4)
As revised, January 1, 2018	$	7	$	(881)