Quarterly Financial Data (Unaudited)

12 Months Ended

Dec. 31, 2016

Summarized quarterly results for the two years ended December 31, 2016 are as follows:



	Three Months Ended
2016	March 31		June 30		September 30		December 31		Full Year
	(in millions, except per share data)
Revenues	$	3,202	$	3,370	$	3,453	$	3,462	$	13,487
Cost of revenues (exclusive of depreciation and amortization expense shown separately below)	1,915		2,038		2,077		2,078		8,108
Selling, general and administrative expenses	646		654		701		730		2,731
Depreciation and amortization expense	87		87		92		93		359
Income from operations	554		591		583		561		2,289
Net income	441		252		444		416		1,553
Basic EPS⁽¹⁾	$	0.73	$	0.42	$	0.73	$	0.69	$	2.56
Diluted EPS⁽¹⁾	$	0.72	$	0.41	$	0.73	$	0.68	$	2.55



	Three Months Ended
2015	March 31		June 30		September 30		December 31		Full Year
	(in millions, except per share data)
Revenues	$	2,911	$	3,085	$	3,187	$	3,233	$	12,416
Cost of revenues (exclusive of depreciation and amortization expense shown separately below)	1,727		1,845		1,935		1,933		7,440
Selling, general and administrative expenses	611		612		627		659		2,509
Depreciation and amortization expense	73		82		82		88		325
Income from operations	500		546		543		553		2,142
Net income	383		420		397		424		1,624
Basic EPS⁽¹⁾	$	0.63	$	0.69	$	0.65	$	0.70	$	2.67
Diluted EPS⁽¹⁾	$	0.62	$	0.68	$	0.65	$	0.69	$	2.65

⁽¹⁾The sum of the quarterly basic and diluted EPS for each of the four quarters may not equal the EPS for the year due to rounding.