Activity in our various shareholders' equity accounts for each of the years in the three-year period ended December 31, 2016 was as follows (in millions):



	Shares	Par Value		Additional Paid-in Capital			Retained Earnings			AOCI			Treasury Shares			Noncontrolling Interest
BALANCE, December 31, 2013	239.6	$	24.1	$	5,467.2		$	7,327.3		$	18.2		$	(45.2	)	$	7.3
Net (loss) income	—	—		—			(3,902.6		)	—			—			14.1
Dividends paid	—	—		—			(704.3		)	—			—			—
Distributions to noncontrolling interests	—	—		—			—			—			—			(13.5		)
Shares issued under share-based compensation plans, net	1.0	.1		.4			—			—			(.1		)	—
Tax benefit from share-based compensation	—	—		1.2			—			—			—			—
Repurchase of shares	—	—		—			—			—			(13.7		)	—
Share-based compensation cost	—	—		48.7			—			—			—			—
Net other comprehensive loss	—	—		—			—			(6.3		)	—			—
BALANCE, December 31, 2014	240.6	24.2		5,517.5			2,720.4			11.9			(59.0		)	7.9
Net (loss) income	—	—		—			(1,594.8		)	—			—			8.9
Dividends paid	—	—		—			(140.3		)	—			—			—
Distributions to noncontrolling interests	—	—		—			—			—			—			(12.5		)
Shares issued under share-based compensation plans, net	2.3	.2		—			—			—			(.2		)	—
Tax expense on share-based compensation	—	—		(2.4		)	—			—			—			—
Repurchase of shares	—	—		—			—			—			(4.6		)	—
Share-based compensation cost	—	—		39.4			—			—			—			—
Net other comprehensive income	—	—		—			—			.6			—			—
BALANCE, December 31, 2015	242.9	24.4		5,554.5			985.3			12.5			(63.8		)	4.3
Net income	—	—		—			890.2			—			—			6.9
Dividends paid	—	—		—			(11.4		)	—			—			—
Distributions to noncontrolling interests	—	—		—			—			—			—			(7.8		)
Contributions from noncontrolling interests	—	—		—			—			—			—			1.0
Equity issuance	65.6	6.5		579.0			—			—			—			—
Equity for debt exchange	1.8	.2		14.8			—			—			—			—
Equity component of convertible senior notes issuance, net	—	—		220.0			—			—			—			—
Tax expense on share-based compensation	—	—		(3.4		)	—			—			—			—
Repurchase of shares	—	—		—			—			—			(2.0		)	—
Share-based compensation cost	—	—		37.3			—			—			—			—
Net other comprehensive income	—	—		—			—			6.5			—			—
BALANCE, December 31, 2016	310.3	$	31.1	$	6,402.2		$	1,864.1		$	19.0		$	(65.8	)	$	4.4