Stockholder's Equity (Tables)

12 Months Ended

Dec. 31, 2016

Stockholders' Equity Note [Abstract]

Schedule of cash dividends declared

We declared the following cash dividend to QSC:

	Years Ended December 31,
	2016		2015	2014
	(Dollars in millions)
Cash dividend declared to QSC	$	1,300	1,350	1,400
Cash dividend paid to QSC	1,300		1,350	1,400