Fair Value (Tables)

12 Months Ended

Dec. 31, 2016

Fair Value [Abstract]

Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis

	December 31, 2016		Level 1		Level 2		Level 3
Available-for-sale securities	$	299	$	163	$	136	$	-
Trading securities		80		80		-		-
Total assets	$	379	$	243	$	136	$	-
Contingent Value Right (CVR)	$	1	$	1	$	-	$	-
CVR-related liability		252		-		-		252
Fair value of interest rate swap agreements		49		-		49		-
Total liabilities	$	302	$	1	$	49	$	252
	December 31, 2015		Level 1		Level 2		Level 3
Available-for-sale securities	$	271	$	155	$	116	$	-
Trading securities		61		61		-		-
Total assets	$	332	$	216	$	116	$	-
Contingent Value Right (CVR)	$	2	$	2	$	-	$	-
CVR-related liability		261		-		-		261
Fair value of interest rate swap agreements		76		-		76		-
Total liabilities	$	339	$	2	$	76	$	261

Available-for-sale Securities

			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Values
As of December 31, 2016:
Debt securities and debt-based mutual funds
Government and corporate	$	232	$	-	$	(9)	$	223
Equity securities and equity-based mutual funds
Domestic		67		3		-		70
International		6		-		-		6
Totals	$	305	$	3	$	(9)	$	299

			Gross		Gross		Estimated
	Amortized		Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Values
As of December 31, 2015:
Debt securities and debt-based mutual funds
Government and corporate	$	161	$	1	$	(6)	$	156
Equity securities and equity-based mutual funds
Domestic		79		15		(1)		93
International		21		1		-		22
Totals	$	261	$	17	$	(7)	$	271

Contractual Maturities of Debt Securities

	December 31, 2016				December 31, 2015
	Amortized		Estimated		Amortized		Estimated
	Cost		Fair Values		Cost		Fair Values
Within 1 year	$	2	$	2	$	1	$	1
After 1 year and through year 5		40		40		12		12
After 5 years and through year 10		42		40		11		11
After 10 years		57		54		22		22

Gross Realized Gains and Losses and Investment Income on Available-for-sale Securities

	Year Ended December 31,
	2016		2015		2014
Realized gains	$	28	$	8	$	13
Realized losses		(6)		(6)		(3)
Investment income		7		8		8