Equity-Based Compensation Stock Options Fair Value Assumptions (Details) - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]
Expected volatility (in percentage)	27.00%	29.00%	34.00%
Expected option life in years (in years)	5 years 6 months	5 years 6 months	5 years 6 months
Expected dividend yield (in percentage)	2.50%	2.60%	2.40%
Risk-free interest rate minimum (in percentage)	1.20%	1.50%	1.50%
Risk-free interest rate maximum (in percentage)	1.50%	1.60%	1.70%
Weighted-average fair value of stock options granted (in usd per share)	$ 11.80	$ 15.25	$ 19.46
Stock option vesting period (in years)	3 years
Stock option expiration date after date of grant	10 years