Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2015

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Data (Unaudited)

Quarterly Financial Data (Unaudited)

	First Quarter		Second Quarter	Third Quarter	Fourth Quarter	Total
	(Dollars in millions)
2015
Operating revenues	$	2,217	2,222	2,287	2,238	8,964
Operating income	545		521	572	622	2,260
Income tax expense	167		152	171	169	659
Net income	247		238	268	321	1,074

	First Quarter		Second Quarter	Third Quarter	Fourth Quarter	Total
	(Dollars in millions)
2014
Operating revenues	$	2,211	2,206	2,198	2,223	8,838
Operating income	542		546	528	496	2,112
Income tax expense	160		162	156	161	639
Net income	253		256	245	216	970

During the third quarter of 2015, we recognized an incremental $64 million of revenue associated with the FCC's CAF Phase 2 support program, and an additional incremental $31 million in the fourth quarter of 2015.