Shareholders' Equity (Tables)

12 Months Ended

Dec. 31, 2017

Accumulated Other Comprehensive Income (Loss) [Line Items]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table presents the changes in Accumulated other comprehensive income (loss), excluding noncontrolling interests:

	Foreign Currency Translation Adjustment and Other			Unrealized Gain (loss) on Investment Securities, Net			Unrealized Gain (Loss) on Interest Rate Swaps Designated as Cash Flow Hedges, Net			Employee Benefit Plan Items, Net			Total
Balance as of December 31, 2015	$	(241,326	)	$	8,533		$	(3,320	)	$	(48,593	)	$	(284,706	)
Other comprehensive income (loss) before reclassifications (a)	(103,254		)	(2,439		)	—			(737		)	(106,430		)
Amounts reclassified into income (loss)	(3,976		)	—			373			10,885			7,282
Net change in accumulated other comprehensive income (loss) for the year ended December 31, 2016	(107,230		)	(2,439		)	373			10,148			(99,148		)
Balance as of December 31, 2016	(348,556		)	6,094			(2,947		)	(38,445		)	(383,854		)
Other comprehensive income (loss) before reclassifications (a)	253,259			8,852			(2,870		)	(3,812		)	255,429
Amounts reclassified into income (loss)	(9,756		)	—			511			12,665			3,420
Net change in accumulated other comprehensive income (loss) for the year ended December 31, 2017	243,503			8,852			(2,359		)	8,853			258,849
Balance as of December 31, 2017	$	(105,053	)	$	14,946		$	(5,306	)	$	(29,592	)	$	(125,005	)

(a) Foreign currency translation adjustment includes intra-entity foreign currency transactions that are of a long-term investment nature of $(64,610) and $(12,852) for 2017 and 2016, respectively.

Schedule of Stock by Class [Table Text Block]

The following table sets forth the activity in the number of shares outstanding (in thousands):

	Common Stock Issued	Treasury Stock		Common Stock Outstanding
Common stock outstanding at December 31, 2014	125,424	29,529		95,895
Shares issued for stock-based compensation awards	—	(1,155	)	1,155
Repurchases of common stock	—	6,127		(6,127	)
Common stock outstanding at December 31, 2015	125,424	34,501		90,923
Shares issued for stock-based compensation awards	—	(1,372	)	1,372
Repurchases of common stock	—	3,382		(3,382	)
Common stock outstanding at December 31, 2016	125,424	36,511		88,913
Shares issued for stock-based compensation awards	—	(1,097	)	1,097
Repurchases of common stock	—	2,319		(2,319	)
Common stock outstanding at December 31, 2017	125,424	37,733		87,691

Share-Repurchase Programs [Table Text Block]

The following table shows the company's share-repurchase programs with activity in the years ended December 31, 2017, 2016, and 2015:

Month of Board Approval	Dollar Value Approved for Repurchase		Dollar Value of Shares Repurchased		Approximate Dollar Value of Shares that May Yet be Purchased Under the Program
May 2014	$	200,000	$	200,000	$	—
December 2014	200,000		200,000		—
September 2015	400,000		400,000		—
December 2016	400,000		41,079		358,921
Total	$	1,200,000	$	841,079	$	358,921